string_case_compare_function  351 Zend/zend_operators.h ZEND_API int string_case_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
string_case_compare_function  152 ext/standard/array.c 			ARRAYG(compare_func) = sort_type & PHP_SORT_FLAG_CASE ? string_case_compare_function : string_compare_function;