+void php_pqdt_to_string(zval *zdt, const char *format, char **str_buf, size_t *str_len TSRMLS_DC)
+{
+ zval rv;
+
+ INIT_PZVAL(&rv);
+ ZVAL_NULL(&rv);
+
+ if (Z_OBJ_HT_P(zdt)->cast_object
+ && SUCCESS == Z_OBJ_HT_P(zdt)->cast_object(zdt, &rv, IS_STRING TSRMLS_CC)
+ ) {
+ *str_len = Z_STRLEN(rv);
+ *str_buf = Z_STRVAL(rv);
+ } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce() TSRMLS_CC)) {
+ zval *rv = NULL, *zfmt;
+
+ MAKE_STD_ZVAL(zfmt);
+ ZVAL_STRING(zfmt, format, 1);
+ zend_call_method_with_1_params(&zdt, Z_OBJCE_P(zdt), NULL, "format", &rv, zfmt);
+ zval_ptr_dtor(&zfmt);
+
+ if (rv) {
+ if (Z_TYPE_P(rv) == IS_STRING) {
+ *str_len = Z_STRLEN_P(rv);
+ *str_buf = estrndup(Z_STRVAL_P(rv), *str_len);
+ }
+ zval_ptr_dtor(&rv);
+ }
+ }
+}
+