root/ext/standard/var.c

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DEFINITIONS

This source file includes following definitions.
  1. php_array_element_dump
  2. php_object_property_dump
  3. php_var_dump
  4. PHP_FUNCTION
  5. zval_array_element_dump
  6. zval_object_property_dump
  7. php_debug_zval_dump
  8. PHP_FUNCTION
  9. php_array_element_export
  10. php_object_element_export
  11. php_var_export_ex
  12. php_var_export
  13. PHP_FUNCTION
  14. php_add_var_hash
  15. php_var_serialize_long
  16. php_var_serialize_string
  17. php_var_serialize_class_name
  18. php_var_serialize_class
  19. php_var_serialize_intern
  20. php_var_serialize
  21. PHP_FUNCTION
  22. PHP_FUNCTION
  23. PHP_FUNCTION
  24. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Jani Lehtimäki <jkl@njet.net>                               |
   |          Thies C. Arntzen <thies@thieso.net>                         |
   |          Sascha Schumann <sascha@schumann.cx>                        |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

/* {{{ includes
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "php.h"
#include "php_string.h"
#include "php_var.h"
#include "php_smart_str.h"
#include "basic_functions.h"
#include "php_incomplete_class.h"

#define COMMON (Z_ISREF_PP(struc) ? "&" : "")
/* }}} */

static int php_array_element_dump(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;

        level = va_arg(args, int);

        if (hash_key->nKeyLength == 0) { /* numeric key */
                php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
        } else { /* string key */
                php_printf("%*c[\"", level + 1, ' ');
                PHPWRITE(hash_key->arKey, hash_key->nKeyLength - 1);
                php_printf("\"]=>\n");
        }
        php_var_dump(zv, level + 2 TSRMLS_CC);
        return 0;
}
/* }}} */

static int php_object_property_dump(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;
        const char *prop_name, *class_name;

        level = va_arg(args, int);

        if (hash_key->nKeyLength == 0) { /* numeric key */
                php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
        } else { /* string key */
                int unmangle = zend_unmangle_property_name(hash_key->arKey, hash_key->nKeyLength - 1, &class_name, &prop_name);
                php_printf("%*c[", level + 1, ' ');

                if (class_name && unmangle == SUCCESS) {
                        if (class_name[0] == '*') {
                                php_printf("\"%s\":protected", prop_name);
                        } else {
                                php_printf("\"%s\":\"%s\":private", prop_name, class_name);
                        }
                } else {
                        php_printf("\"");
                        PHPWRITE(hash_key->arKey, hash_key->nKeyLength - 1);
                        php_printf("\"");
                }
                ZEND_PUTS("]=>\n");
        }
        php_var_dump(zv, level + 2 TSRMLS_CC);
        return 0;
}
/* }}} */

PHPAPI void php_var_dump(zval **struc, int level TSRMLS_DC) /* {{{ */
{
        HashTable *myht;
        const char *class_name;
        zend_uint class_name_len;
        int (*php_element_dump_func)(zval** TSRMLS_DC, int, va_list, zend_hash_key*);
        int is_temp;

        if (level > 1) {
                php_printf("%*c", level - 1, ' ');
        }

        switch (Z_TYPE_PP(struc)) {
        case IS_BOOL:
                php_printf("%sbool(%s)\n", COMMON, Z_LVAL_PP(struc) ? "true" : "false");
                break;
        case IS_NULL:
                php_printf("%sNULL\n", COMMON);
                break;
        case IS_LONG:
                php_printf("%sint(%ld)\n", COMMON, Z_LVAL_PP(struc));
                break;
        case IS_DOUBLE:
                php_printf("%sfloat(%.*G)\n", COMMON, (int) EG(precision), Z_DVAL_PP(struc));
                break;
        case IS_STRING:
                php_printf("%sstring(%d) \"", COMMON, Z_STRLEN_PP(struc));
                PHPWRITE(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc));
                PUTS("\"\n");
                break;
        case IS_ARRAY:
                myht = Z_ARRVAL_PP(struc);
                if (++myht->nApplyCount > 1) {
                        PUTS("*RECURSION*\n");
                        --myht->nApplyCount;
                        return;
                }
                php_printf("%sarray(%d) {\n", COMMON, zend_hash_num_elements(myht));
                php_element_dump_func = php_array_element_dump;
                is_temp = 0;
                goto head_done;
        case IS_OBJECT:
                myht = Z_OBJDEBUG_PP(struc, is_temp);
                if (myht && ++myht->nApplyCount > 1) {
                        PUTS("*RECURSION*\n");
                        --myht->nApplyCount;
                        return;
                }

                if (Z_OBJ_HANDLER(**struc, get_class_name)) {
                        Z_OBJ_HANDLER(**struc, get_class_name)(*struc, &class_name, &class_name_len, 0 TSRMLS_CC);
                        php_printf("%sobject(%s)#%d (%d) {\n", COMMON, class_name, Z_OBJ_HANDLE_PP(struc), myht ? zend_hash_num_elements(myht) : 0);
                        efree((char*)class_name);
                } else {
                        php_printf("%sobject(unknown class)#%d (%d) {\n", COMMON, Z_OBJ_HANDLE_PP(struc), myht ? zend_hash_num_elements(myht) : 0);
                }
                php_element_dump_func = php_object_property_dump;
head_done:
                if (myht) {
                        zend_hash_apply_with_arguments(myht TSRMLS_CC, (apply_func_args_t) php_element_dump_func, 1, level);
                        --myht->nApplyCount;
                        if (is_temp) {
                                zend_hash_destroy(myht);
                                efree(myht);
                        }
                }
                if (level > 1) {
                        php_printf("%*c", level-1, ' ');
                }
                PUTS("}\n");
                break;
        case IS_RESOURCE: {
                const char *type_name = zend_rsrc_list_get_rsrc_type(Z_LVAL_PP(struc) TSRMLS_CC);
                php_printf("%sresource(%ld) of type (%s)\n", COMMON, Z_LVAL_PP(struc), type_name ? type_name : "Unknown");
                break;
        }
        default:
                php_printf("%sUNKNOWN:0\n", COMMON);
                break;
        }
}
/* }}} */

/* {{{ proto void var_dump(mixed var)
   Dumps a string representation of variable to output */
PHP_FUNCTION(var_dump)
{
        zval ***args;
        int argc;
        int     i;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "+", &args, &argc) == FAILURE) {
                return;
        }

        for (i = 0; i < argc; i++) {
                php_var_dump(args[i], 1 TSRMLS_CC);
        }
        efree(args);
}
/* }}} */

static int zval_array_element_dump(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;

        level = va_arg(args, int);

        if (hash_key->nKeyLength == 0) { /* numeric key */
                php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
        } else { /* string key */
                /* XXX: perphaps when we are inside the class we should permit access to
                 * private & protected values
                 */
                if (va_arg(args, int) && hash_key->arKey[0] == '\0') {
                        return 0;
                }
                php_printf("%*c[\"", level + 1, ' ');
                PHPWRITE(hash_key->arKey, hash_key->nKeyLength - 1);
                php_printf("\"]=>\n");
        }
        php_debug_zval_dump(zv, level + 2 TSRMLS_CC);
        return 0;
}
/* }}} */

static int zval_object_property_dump(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;
        const char *prop_name, *class_name;

        level = va_arg(args, int);

        if (hash_key->nKeyLength == 0) { /* numeric key */
                php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
        } else { /* string key */
                zend_unmangle_property_name(hash_key->arKey, hash_key->nKeyLength - 1, &class_name, &prop_name);
                php_printf("%*c[", level + 1, ' ');

                if (class_name) {
                        if (class_name[0] == '*') {
                                php_printf("\"%s\":protected", prop_name);
                        } else {
                                php_printf("\"%s\":\"%s\":private", prop_name, class_name);
                        }
                } else {
                        php_printf("\"%s\"", prop_name);
                }
                ZEND_PUTS("]=>\n");
        }
        php_debug_zval_dump(zv, level + 2 TSRMLS_CC);
        return 0;
}
/* }}} */

PHPAPI void php_debug_zval_dump(zval **struc, int level TSRMLS_DC) /* {{{ */
{
        HashTable *myht = NULL;
        const char *class_name;
        zend_uint class_name_len;
        int (*zval_element_dump_func)(zval** TSRMLS_DC, int, va_list, zend_hash_key*);
        int is_temp = 0;

        if (level > 1) {
                php_printf("%*c", level - 1, ' ');
        }

        switch (Z_TYPE_PP(struc)) {
        case IS_BOOL:
                php_printf("%sbool(%s) refcount(%u)\n", COMMON, Z_LVAL_PP(struc)?"true":"false", Z_REFCOUNT_PP(struc));
                break;
        case IS_NULL:
                php_printf("%sNULL refcount(%u)\n", COMMON, Z_REFCOUNT_PP(struc));
                break;
        case IS_LONG:
                php_printf("%slong(%ld) refcount(%u)\n", COMMON, Z_LVAL_PP(struc), Z_REFCOUNT_PP(struc));
                break;
        case IS_DOUBLE:
                php_printf("%sdouble(%.*G) refcount(%u)\n", COMMON, (int) EG(precision), Z_DVAL_PP(struc), Z_REFCOUNT_PP(struc));
                break;
        case IS_STRING:
                php_printf("%sstring(%d) \"", COMMON, Z_STRLEN_PP(struc));
                PHPWRITE(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc));
                php_printf("\" refcount(%u)\n", Z_REFCOUNT_PP(struc));
                break;
        case IS_ARRAY:
                myht = Z_ARRVAL_PP(struc);
                if (myht->nApplyCount > 1) {
                        PUTS("*RECURSION*\n");
                        return;
                }
                php_printf("%sarray(%d) refcount(%u){\n", COMMON, zend_hash_num_elements(myht), Z_REFCOUNT_PP(struc));
                zval_element_dump_func = zval_array_element_dump;
                goto head_done;
        case IS_OBJECT:
                myht = Z_OBJDEBUG_PP(struc, is_temp);
                if (myht && myht->nApplyCount > 1) {
                        PUTS("*RECURSION*\n");
                        return;
                }
                Z_OBJ_HANDLER_PP(struc, get_class_name)(*struc, &class_name, &class_name_len, 0 TSRMLS_CC);
                php_printf("%sobject(%s)#%d (%d) refcount(%u){\n", COMMON, class_name, Z_OBJ_HANDLE_PP(struc), myht ? zend_hash_num_elements(myht) : 0, Z_REFCOUNT_PP(struc));
                efree((char*)class_name);
                zval_element_dump_func = zval_object_property_dump;
head_done:
                if (myht) {
                        zend_hash_apply_with_arguments(myht TSRMLS_CC, (apply_func_args_t) zval_element_dump_func, 1, level, (Z_TYPE_PP(struc) == IS_ARRAY ? 0 : 1));
                        if (is_temp) {
                                zend_hash_destroy(myht);
                                efree(myht);
                        }
                }
                if (level > 1) {
                        php_printf("%*c", level - 1, ' ');
                }
                PUTS("}\n");
                break;
        case IS_RESOURCE: {
                const char *type_name = zend_rsrc_list_get_rsrc_type(Z_LVAL_PP(struc) TSRMLS_CC);
                php_printf("%sresource(%ld) of type (%s) refcount(%u)\n", COMMON, Z_LVAL_PP(struc), type_name ? type_name : "Unknown", Z_REFCOUNT_PP(struc));
                break;
        }
        default:
                php_printf("%sUNKNOWN:0\n", COMMON);
                break;
        }
}
/* }}} */

/* {{{ proto void debug_zval_dump(mixed var)
   Dumps a string representation of an internal zend value to output. */
PHP_FUNCTION(debug_zval_dump)
{
        zval ***args;
        int argc;
        int     i;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "+", &args, &argc) == FAILURE) {
                return;
        }

        for (i = 0; i < argc; i++) {
                php_debug_zval_dump(args[i], 1 TSRMLS_CC);
        }
        efree(args);
}
/* }}} */

#define buffer_append_spaces(buf, num_spaces) \
        do { \
                char *tmp_spaces; \
                int tmp_spaces_len; \
                tmp_spaces_len = spprintf(&tmp_spaces, 0,"%*c", num_spaces, ' '); \
                smart_str_appendl(buf, tmp_spaces, tmp_spaces_len); \
                efree(tmp_spaces); \
        } while(0);

static int php_array_element_export(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;
        smart_str *buf;

        level = va_arg(args, int);
        buf = va_arg(args, smart_str *);

        if (hash_key->nKeyLength == 0) { /* numeric key */
                buffer_append_spaces(buf, level+1);
                smart_str_append_long(buf, (long) hash_key->h);
                smart_str_appendl(buf, " => ", 4);

        } else { /* string key */
                char *key, *tmp_str;
                int key_len, tmp_len;
                key = php_addcslashes(hash_key->arKey, hash_key->nKeyLength - 1, &key_len, 0, "'\\", 2 TSRMLS_CC);
                tmp_str = php_str_to_str_ex(key, key_len, "\0", 1, "' . \"\\0\" . '", 12, &tmp_len, 0, NULL);

                buffer_append_spaces(buf, level + 1);

                smart_str_appendc(buf, '\'');
                smart_str_appendl(buf, tmp_str, tmp_len);
                smart_str_appendl(buf, "' => ", 5);

                efree(key);
                efree(tmp_str);
        }
        php_var_export_ex(zv, level + 2, buf TSRMLS_CC);

        smart_str_appendc(buf, ',');
        smart_str_appendc(buf, '\n');
        
        return 0;
}
/* }}} */

static int php_object_element_export(zval **zv TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
        int level;
        smart_str *buf;

        level = va_arg(args, int);
        buf = va_arg(args, smart_str *);

        buffer_append_spaces(buf, level + 2);
        if (hash_key->nKeyLength != 0) {
                const char *class_name; /* ignored, but must be passed to unmangle */
                const char *pname;
                char *pname_esc;
                int  pname_esc_len;
                
                zend_unmangle_property_name(hash_key->arKey, hash_key->nKeyLength - 1,
                                &class_name, &pname);
                pname_esc = php_addcslashes(pname, strlen(pname), &pname_esc_len, 0,
                        "'\\", 2 TSRMLS_CC);

                smart_str_appendc(buf, '\'');
                smart_str_appendl(buf, pname_esc, pname_esc_len);
                smart_str_appendc(buf, '\'');
                efree(pname_esc);
        } else {
                smart_str_append_long(buf, (long) hash_key->h);
        }
        smart_str_appendl(buf, " => ", 4);
        php_var_export_ex(zv, level + 2, buf TSRMLS_CC);
        smart_str_appendc(buf, ',');
        smart_str_appendc(buf, '\n');
        return 0;
}
/* }}} */

PHPAPI void php_var_export_ex(zval **struc, int level, smart_str *buf TSRMLS_DC) /* {{{ */
{
        HashTable *myht;
        char *tmp_str, *tmp_str2;
        int tmp_len, tmp_len2;
        const char *class_name;
        zend_uint class_name_len;

        switch (Z_TYPE_PP(struc)) {
        case IS_BOOL:
                if (Z_LVAL_PP(struc)) {
                        smart_str_appendl(buf, "true", 4);
                } else {
                        smart_str_appendl(buf, "false", 5);
                }
                break;
        case IS_NULL:
                smart_str_appendl(buf, "NULL", 4);
                break;
        case IS_LONG:
                smart_str_append_long(buf, Z_LVAL_PP(struc));
                break;
        case IS_DOUBLE:
                tmp_len = spprintf(&tmp_str, 0,"%.*H", PG(serialize_precision), Z_DVAL_PP(struc));
                smart_str_appendl(buf, tmp_str, tmp_len);
                efree(tmp_str);
                break;
        case IS_STRING:
                tmp_str = php_addcslashes(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc), &tmp_len, 0, "'\\", 2 TSRMLS_CC);
                tmp_str2 = php_str_to_str_ex(tmp_str, tmp_len, "\0", 1, "' . \"\\0\" . '", 12, &tmp_len2, 0, NULL);

                smart_str_appendc(buf, '\'');
                smart_str_appendl(buf, tmp_str2, tmp_len2);
                smart_str_appendc(buf, '\'');

                efree(tmp_str2);
                efree(tmp_str);
                break;
        case IS_ARRAY:
                myht = Z_ARRVAL_PP(struc);
                if(myht && myht->nApplyCount > 0){
                        smart_str_appendl(buf, "NULL", 4);
                        zend_error(E_WARNING, "var_export does not handle circular references");
                        return;
                }
                if (level > 1) {
                        smart_str_appendc(buf, '\n');
                        buffer_append_spaces(buf, level - 1);
                }
                smart_str_appendl(buf, "array (\n", 8);
                zend_hash_apply_with_arguments(myht TSRMLS_CC, (apply_func_args_t) php_array_element_export, 2, level, buf);

                if (level > 1) {
                        buffer_append_spaces(buf, level - 1);
                }
                smart_str_appendc(buf, ')');
    
                break;

        case IS_OBJECT:
                myht = Z_OBJPROP_PP(struc);
                if(myht && myht->nApplyCount > 0){
                        smart_str_appendl(buf, "NULL", 4);
                        zend_error(E_WARNING, "var_export does not handle circular references");
                        return;
                }
                if (level > 1) {
                        smart_str_appendc(buf, '\n');
                        buffer_append_spaces(buf, level - 1);
                }
                Z_OBJ_HANDLER(**struc, get_class_name)(*struc, &class_name, &class_name_len, 0 TSRMLS_CC);

                smart_str_appendl(buf, class_name, class_name_len);
                smart_str_appendl(buf, "::__set_state(array(\n", 21);

                efree((char*)class_name);
                if (myht) {
                        zend_hash_apply_with_arguments(myht TSRMLS_CC, (apply_func_args_t) php_object_element_export, 1, level, buf);
                }
                if (level > 1) {
                        buffer_append_spaces(buf, level - 1);
                }
                smart_str_appendl(buf, "))", 2);

                break;
        default:
                smart_str_appendl(buf, "NULL", 4);
                break;
        }
}
/* }}} */

/* FOR BC reasons, this will always perform and then print */
PHPAPI void php_var_export(zval **struc, int level TSRMLS_DC) /* {{{ */
{
        smart_str buf = {0};
        php_var_export_ex(struc, level, &buf TSRMLS_CC);
        smart_str_0 (&buf);
        PHPWRITE(buf.c, buf.len);
        smart_str_free(&buf);
}
/* }}} */


/* {{{ proto mixed var_export(mixed var [, bool return])
   Outputs or returns a string representation of a variable */
PHP_FUNCTION(var_export)
{
        zval *var;
        zend_bool return_output = 0;
        smart_str buf = {0};

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|b", &var, &return_output) == FAILURE) {
                return;
        }

        php_var_export_ex(&var, 1, &buf TSRMLS_CC);
        smart_str_0 (&buf);

        if (return_output) {
                RETVAL_STRINGL(buf.c, buf.len, 1);
        } else {
                PHPWRITE(buf.c, buf.len);
        }
        smart_str_free(&buf);
}
/* }}} */

static void php_var_serialize_intern(smart_str *buf, zval *struc, HashTable *var_hash TSRMLS_DC);

static inline int php_add_var_hash(HashTable *var_hash, zval *var, void *var_old TSRMLS_DC) /* {{{ */
{
        ulong var_no;
        char id[32], *p;
        register int len;

        if ((Z_TYPE_P(var) == IS_OBJECT) && Z_OBJ_HT_P(var)->get_class_entry) {
                p = smart_str_print_long(id + sizeof(id) - 1,
                                (long) zend_objects_get_address(var TSRMLS_CC));
                *(--p) = 'O';
                len = id + sizeof(id) - 1 - p;
        } else {
                p = smart_str_print_long(id + sizeof(id) - 1, (long) var);
                len = id + sizeof(id) - 1 - p;
        }

        if (var_old && zend_hash_find(var_hash, p, len, var_old) == SUCCESS) {
                if (!Z_ISREF_P(var)) {
                        /* we still need to bump up the counter, since non-refs will
                         * be counted separately by unserializer */
                        var_no = -1;
                        zend_hash_next_index_insert(var_hash, &var_no, sizeof(var_no), NULL);
                }
#if 0
                fprintf(stderr, "- had var (%d): %lu\n", Z_TYPE_P(var), **(ulong**)var_old);
#endif
                return FAILURE;
        }

        /* +1 because otherwise hash will think we are trying to store NULL pointer */
        var_no = zend_hash_num_elements(var_hash) + 1;
        zend_hash_add(var_hash, p, len, &var_no, sizeof(var_no), NULL);
#if 0
        fprintf(stderr, "+ add var (%d): %lu\n", Z_TYPE_P(var), var_no);
#endif
        return SUCCESS;
}
/* }}} */

static inline void php_var_serialize_long(smart_str *buf, long val) /* {{{ */
{
        smart_str_appendl(buf, "i:", 2);
        smart_str_append_long(buf, val);
        smart_str_appendc(buf, ';');
}
/* }}} */

static inline void php_var_serialize_string(smart_str *buf, char *str, int len) /* {{{ */
{
        smart_str_appendl(buf, "s:", 2);
        smart_str_append_long(buf, len);
        smart_str_appendl(buf, ":\"", 2);
        smart_str_appendl(buf, str, len);
        smart_str_appendl(buf, "\";", 2);
}
/* }}} */

static inline zend_bool php_var_serialize_class_name(smart_str *buf, zval *struc TSRMLS_DC) /* {{{ */
{
        PHP_CLASS_ATTRIBUTES;

        PHP_SET_CLASS_ATTRIBUTES(struc);
        smart_str_appendl(buf, "O:", 2);
        smart_str_append_long(buf, (int)name_len);
        smart_str_appendl(buf, ":\"", 2);
        smart_str_appendl(buf, class_name, name_len);
        smart_str_appendl(buf, "\":", 2);
        PHP_CLEANUP_CLASS_ATTRIBUTES();
        return incomplete_class;
}
/* }}} */

static void php_var_serialize_class(smart_str *buf, zval *struc, zval *retval_ptr, HashTable *var_hash TSRMLS_DC) /* {{{ */
{
        int count;
        zend_bool incomplete_class;

        incomplete_class = php_var_serialize_class_name(buf, struc TSRMLS_CC);
        /* count after serializing name, since php_var_serialize_class_name
         * changes the count if the variable is incomplete class */
        count = zend_hash_num_elements(HASH_OF(retval_ptr));
        if (incomplete_class) {
                --count;
        }
        smart_str_append_long(buf, count);
        smart_str_appendl(buf, ":{", 2);

        if (count > 0) {
                char *key;
                zval **d, **name;
                ulong index;
                HashPosition pos;
                int i;
                zval nval, *nvalp;
                HashTable *propers;

                ZVAL_NULL(&nval);
                nvalp = &nval;

                zend_hash_internal_pointer_reset_ex(HASH_OF(retval_ptr), &pos);

                for (;; zend_hash_move_forward_ex(HASH_OF(retval_ptr), &pos)) {
                        i = zend_hash_get_current_key_ex(HASH_OF(retval_ptr), &key, NULL, &index, 0, &pos);

                        if (i == HASH_KEY_NON_EXISTENT) {
                                break;
                        }

                        if (incomplete_class && strcmp(key, MAGIC_MEMBER) == 0) {
                                continue;
                        }
                        zend_hash_get_current_data_ex(HASH_OF(retval_ptr), (void **) &name, &pos);

                        if (Z_TYPE_PP(name) != IS_STRING) {
                                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "__sleep should return an array only containing the names of instance-variables to serialize.");
                                /* we should still add element even if it's not OK,
                                 * since we already wrote the length of the array before */
                                smart_str_appendl(buf,"N;", 2);
                                continue;
                        }
                        propers = Z_OBJPROP_P(struc);
                        if (zend_hash_find(propers, Z_STRVAL_PP(name), Z_STRLEN_PP(name) + 1, (void *) &d) == SUCCESS) {
                                php_var_serialize_string(buf, Z_STRVAL_PP(name), Z_STRLEN_PP(name));
                                php_var_serialize_intern(buf, *d, var_hash TSRMLS_CC);
                        } else {
                                zend_class_entry *ce;
                                ce = zend_get_class_entry(struc TSRMLS_CC);
                                if (ce) {
                                        char *prot_name, *priv_name;
                                        int prop_name_length;

                                        do {
                                                zend_mangle_property_name(&priv_name, &prop_name_length, ce->name, ce->name_length, Z_STRVAL_PP(name), Z_STRLEN_PP(name), ce->type & ZEND_INTERNAL_CLASS);
                                                if (zend_hash_find(propers, priv_name, prop_name_length + 1, (void *) &d) == SUCCESS) {
                                                        php_var_serialize_string(buf, priv_name, prop_name_length);
                                                        pefree(priv_name, ce->type & ZEND_INTERNAL_CLASS);
                                                        php_var_serialize_intern(buf, *d, var_hash TSRMLS_CC);
                                                        break;
                                                }
                                                pefree(priv_name, ce->type & ZEND_INTERNAL_CLASS);
                                                zend_mangle_property_name(&prot_name, &prop_name_length, "*", 1, Z_STRVAL_PP(name), Z_STRLEN_PP(name), ce->type & ZEND_INTERNAL_CLASS);
                                                if (zend_hash_find(propers, prot_name, prop_name_length + 1, (void *) &d) == SUCCESS) {
                                                        php_var_serialize_string(buf, prot_name, prop_name_length);
                                                        pefree(prot_name, ce->type & ZEND_INTERNAL_CLASS);
                                                        php_var_serialize_intern(buf, *d, var_hash TSRMLS_CC);
                                                        break;
                                                }
                                                pefree(prot_name, ce->type & ZEND_INTERNAL_CLASS);
                                                php_var_serialize_string(buf, Z_STRVAL_PP(name), Z_STRLEN_PP(name));
                                                php_var_serialize_intern(buf, nvalp, var_hash TSRMLS_CC);
                                                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "\"%s\" returned as member variable from __sleep() but does not exist", Z_STRVAL_PP(name));
                                        } while (0);
                                } else {
                                        php_var_serialize_string(buf, Z_STRVAL_PP(name), Z_STRLEN_PP(name));
                                        php_var_serialize_intern(buf, nvalp, var_hash TSRMLS_CC);
                                }
                        }
                }
        }
        smart_str_appendc(buf, '}');
}
/* }}} */

static void php_var_serialize_intern(smart_str *buf, zval *struc, HashTable *var_hash TSRMLS_DC) /* {{{ */
{
        int i;
        ulong *var_already;
        HashTable *myht;

        if (EG(exception)) {
                return;
        }

        if (var_hash && php_add_var_hash(var_hash, struc, (void *) &var_already TSRMLS_CC) == FAILURE) {
                if (Z_ISREF_P(struc)) {
                        smart_str_appendl(buf, "R:", 2);
                        smart_str_append_long(buf, (long)*var_already);
                        smart_str_appendc(buf, ';');
                        return;
                } else if (Z_TYPE_P(struc) == IS_OBJECT) {
                        smart_str_appendl(buf, "r:", 2);
                        smart_str_append_long(buf, (long)*var_already);
                        smart_str_appendc(buf, ';');
                        return;
                }
        }

        switch (Z_TYPE_P(struc)) {
                case IS_BOOL:
                        smart_str_appendl(buf, "b:", 2);
                        smart_str_append_long(buf, Z_LVAL_P(struc));
                        smart_str_appendc(buf, ';');
                        return;

                case IS_NULL:
                        smart_str_appendl(buf, "N;", 2);
                        return;

                case IS_LONG:
                        php_var_serialize_long(buf, Z_LVAL_P(struc));
                        return;

                case IS_DOUBLE: {
                                char *s;

                                smart_str_appendl(buf, "d:", 2);
                                s = (char *) safe_emalloc(PG(serialize_precision), 1, MAX_LENGTH_OF_DOUBLE + 1);
                                php_gcvt(Z_DVAL_P(struc), PG(serialize_precision), '.', 'E', s);
                                smart_str_appends(buf, s);
                                smart_str_appendc(buf, ';');
                                efree(s);
                                return;
                        }

                case IS_STRING:
                        php_var_serialize_string(buf, Z_STRVAL_P(struc), Z_STRLEN_P(struc));
                        return;

                case IS_OBJECT: {
                                zval *retval_ptr = NULL;
                                zval fname;
                                int res;
                                zend_class_entry *ce = NULL;

                                if (Z_OBJ_HT_P(struc)->get_class_entry) {
                                        ce = Z_OBJCE_P(struc);
                                }

                                if (ce && ce->serialize != NULL) {
                                        /* has custom handler */
                                        unsigned char *serialized_data = NULL;
                                        zend_uint serialized_length;

                                        if (ce->serialize(struc, &serialized_data, &serialized_length, (zend_serialize_data *)var_hash TSRMLS_CC) == SUCCESS) {
                                                smart_str_appendl(buf, "C:", 2);
                                                smart_str_append_long(buf, (int)Z_OBJCE_P(struc)->name_length);
                                                smart_str_appendl(buf, ":\"", 2);
                                                smart_str_appendl(buf, Z_OBJCE_P(struc)->name, Z_OBJCE_P(struc)->name_length);
                                                smart_str_appendl(buf, "\":", 2);

                                                smart_str_append_long(buf, (int)serialized_length);
                                                smart_str_appendl(buf, ":{", 2);
                                                smart_str_appendl(buf, serialized_data, serialized_length);
                                                smart_str_appendc(buf, '}');
                                        } else {
                                                smart_str_appendl(buf, "N;", 2);
                                        }
                                        if (serialized_data) {
                                                efree(serialized_data);
                                        }
                                        return;
                                }

                                if (ce && ce != PHP_IC_ENTRY && zend_hash_exists(&ce->function_table, "__sleep", sizeof("__sleep"))) {
                                        INIT_PZVAL(&fname);
                                        ZVAL_STRINGL(&fname, "__sleep", sizeof("__sleep") - 1, 0);
                                        BG(serialize_lock)++;
                                        res = call_user_function_ex(CG(function_table), &struc, &fname, &retval_ptr, 0, 0, 1, NULL TSRMLS_CC);
                                        BG(serialize_lock)--;
                    
                                        if (EG(exception)) {
                                                if (retval_ptr) {
                                                        zval_ptr_dtor(&retval_ptr);
                                                }
                                                return;
                                        }

                                        if (res == SUCCESS) {
                                                if (retval_ptr) {
                                                        if (HASH_OF(retval_ptr)) {
                                                                php_var_serialize_class(buf, struc, retval_ptr, var_hash TSRMLS_CC);
                                                        } else {
                                                                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "__sleep should return an array only containing the names of instance-variables to serialize");
                                                                /* we should still add element even if it's not OK,
                                                                 * since we already wrote the length of the array before */
                                                                smart_str_appendl(buf,"N;", 2);
                                                        }
                                                        zval_ptr_dtor(&retval_ptr);
                                                }
                                                return;
                                        }
                                }

                                if (retval_ptr) {
                                        zval_ptr_dtor(&retval_ptr);
                                }
                                /* fall-through */
                        }
                case IS_ARRAY: {
                        zend_bool incomplete_class = 0;
                        if (Z_TYPE_P(struc) == IS_ARRAY) {
                                smart_str_appendl(buf, "a:", 2);
                                myht = HASH_OF(struc);
                        } else {
                                incomplete_class = php_var_serialize_class_name(buf, struc TSRMLS_CC);
                                myht = Z_OBJPROP_P(struc);
                        }
                        /* count after serializing name, since php_var_serialize_class_name
                         * changes the count if the variable is incomplete class */
                        i = myht ? zend_hash_num_elements(myht) : 0;
                        if (i > 0 && incomplete_class) {
                                --i;
                        }
                        smart_str_append_long(buf, i);
                        smart_str_appendl(buf, ":{", 2);
                        if (i > 0) {
                                char *key;
                                zval **data;
                                ulong index;
                                uint key_len;
                                HashPosition pos;

                                zend_hash_internal_pointer_reset_ex(myht, &pos);
                                for (;; zend_hash_move_forward_ex(myht, &pos)) {
                                        i = zend_hash_get_current_key_ex(myht, &key, &key_len, &index, 0, &pos);
                                        if (i == HASH_KEY_NON_EXISTENT) {
                                                break;
                                        }
                                        if (incomplete_class && strcmp(key, MAGIC_MEMBER) == 0) {
                                                continue;
                                        }

                                        switch (i) {
                                                case HASH_KEY_IS_LONG:
                                                        php_var_serialize_long(buf, index);
                                                        break;
                                                case HASH_KEY_IS_STRING:
                                                        php_var_serialize_string(buf, key, key_len - 1);
                                                        break;
                                        }

                                        /* we should still add element even if it's not OK,
                                         * since we already wrote the length of the array before */
                                        if (zend_hash_get_current_data_ex(myht, (void **) &data, &pos) != SUCCESS
                                                || !data
                                                || data == &struc
                                                || (Z_TYPE_PP(data) == IS_ARRAY && Z_ARRVAL_PP(data)->nApplyCount > 1)
                                        ) {
                                                smart_str_appendl(buf, "N;", 2);
                                        } else {
                                                if (Z_TYPE_PP(data) == IS_ARRAY) {
                                                        Z_ARRVAL_PP(data)->nApplyCount++;
                                                }
                                                php_var_serialize_intern(buf, *data, var_hash TSRMLS_CC);
                                                if (Z_TYPE_PP(data) == IS_ARRAY) {
                                                        Z_ARRVAL_PP(data)->nApplyCount--;
                                                }
                                        }
                                }
                        }
                        smart_str_appendc(buf, '}');
                        return;
                }
                default:
                        smart_str_appendl(buf, "i:0;", 4);
                        return;
        }
}
/* }}} */

PHPAPI void php_var_serialize(smart_str *buf, zval **struc, php_serialize_data_t *var_hash TSRMLS_DC) /* {{{ */
{
        php_var_serialize_intern(buf, *struc, *var_hash TSRMLS_CC);
        smart_str_0(buf);
}
/* }}} */

/* {{{ proto string serialize(mixed variable)
   Returns a string representation of variable (which can later be unserialized) */
PHP_FUNCTION(serialize)
{
        zval **struc;
        php_serialize_data_t var_hash;
        smart_str buf = {0};

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Z", &struc) == FAILURE) {
                return;
        }

        Z_TYPE_P(return_value) = IS_STRING;
        Z_STRVAL_P(return_value) = NULL;
        Z_STRLEN_P(return_value) = 0;

        PHP_VAR_SERIALIZE_INIT(var_hash);
        php_var_serialize(&buf, struc, &var_hash TSRMLS_CC);
        PHP_VAR_SERIALIZE_DESTROY(var_hash);

        if (EG(exception)) {
                smart_str_free(&buf);
                RETURN_FALSE;
        }

        if (buf.c) {
                RETURN_STRINGL(buf.c, buf.len, 0);
        } else {
                RETURN_NULL();
        }
}
/* }}} */

/* {{{ proto mixed unserialize(string variable_representation)
   Takes a string representation of variable and recreates it */
PHP_FUNCTION(unserialize)
{
        char *buf = NULL;
        int buf_len;
        const unsigned char *p;
        php_unserialize_data_t var_hash;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &buf, &buf_len) == FAILURE) {
                RETURN_FALSE;
        }

        if (buf_len == 0) {
                RETURN_FALSE;
        }

        p = (const unsigned char*) buf;
        PHP_VAR_UNSERIALIZE_INIT(var_hash);
        if (!php_var_unserialize(&return_value, &p, p + buf_len, &var_hash TSRMLS_CC)) {
                PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
                zval_dtor(return_value);
                if (!EG(exception)) {
                        php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Error at offset %ld of %d bytes", (long)((char*)p - buf), buf_len);
                }
                RETURN_FALSE;
        }
        PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
}
/* }}} */

/* {{{ proto int memory_get_usage([real_usage])
   Returns the allocated by PHP memory */
PHP_FUNCTION(memory_get_usage) {
        zend_bool real_usage = 0;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &real_usage) == FAILURE) {
                RETURN_FALSE;
        }

        RETURN_LONG(zend_memory_usage(real_usage TSRMLS_CC));
}
/* }}} */

/* {{{ proto int memory_get_peak_usage([real_usage])
   Returns the peak allocated by PHP memory */
PHP_FUNCTION(memory_get_peak_usage) {
        zend_bool real_usage = 0;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &real_usage) == FAILURE) {
                RETURN_FALSE;
        }

        RETURN_LONG(zend_memory_peak_usage(real_usage TSRMLS_CC));
}
/* }}} */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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