[php-src] Issue #15262: Why internal function is slower than my own doing the same?

Issue: https://github.com/php/php-src/issues/15262 Author: 6562680 ### Description The following code: ```php <?php function parse_string_one($value) : ?string { static $fn; $fn = $fn ?? (static function (string $value) { return $value; }); if (is_string($value)) { return $value; } try { $_value = $fn($value); } catch ( \Throwable $e ) { return null; } return $_value; } function parse_string_two($value) : ?string { if (is_string($value)) { return $value; } if ( null === $value || is_array($value) || is_resource($value) ) { return null; } if (is_object($value)) { if (method_exists($value, '__toString')) { $_value = (string) $value; return $_value; } return null; } $_value = $value; $status = @settype($_value, 'string'); if ($status) { return $_value; } return null; } ``` The parse_string_one like 2x slower than parse_string_two. Also: ``` @settype($_value, 'string'); ``` affects objects that has no method __toString() converts any object to word 'Object' in that case the boolean should be converted to 'TRUE/FALSE', and NULL should be converted to 'NULL' Or this is bug. ### PHP Version PHP 8.0 ### Operating System _No response_