php_exec          217 ext/standard/exec.c 		ret = php_exec(mode, cmd, NULL, return_value TSRMLS_CC);
php_exec          223 ext/standard/exec.c 		ret = php_exec(2, cmd, ret_array, return_value TSRMLS_CC);
php_exec           39 ext/standard/exec.h int php_exec(int type, char *cmd, zval *array, zval *return_value TSRMLS_DC);