_ZSTR_HEADER_SIZE 22 Zend/zend_smart_str.c #define SMART_STR_OVERHEAD (ZEND_MM_OVERHEAD + _ZSTR_HEADER_SIZE) _ZSTR_HEADER_SIZE 45 Zend/zend_smart_str.c str->s = (zend_string *) erealloc2(str->s, _ZSTR_HEADER_SIZE + str->a + 1, _ZSTR_HEADER_SIZE + ZSTR_LEN(str->s) + 1); _ZSTR_HEADER_SIZE 59 Zend/zend_smart_str.c str->s = (zend_string *) realloc(str->s, _ZSTR_HEADER_SIZE + str->a + 1); _ZSTR_HEADER_SIZE 49 Zend/zend_string.h #define _STR_HEADER_SIZE _ZSTR_HEADER_SIZE _ZSTR_HEADER_SIZE 62 Zend/zend_string.h #define _ZSTR_STRUCT_SIZE(len) (_ZSTR_HEADER_SIZE + len + 1) _ZSTR_HEADER_SIZE 214 ext/opcache/zend_file_cache.c ((_ZSTR_HEADER_SIZE + 1 + new_len + 4095) & ~0xfff) - (_ZSTR_HEADER_SIZE + 1), _ZSTR_HEADER_SIZE 750 ext/opcache/zend_file_cache.c ZCG(mem) = zend_string_alloc(4096 - (_ZSTR_HEADER_SIZE + 1), 0);