3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = json_decode('{"a": "\u000f\u000f?\u001f\u000f\u000e\u000f\u001e\u00c3"}')->a; var_dump(hex($str)); $str = preg_replace('/[\x00-\x1f\x7f]/', '', $str); var_dump(hex($str)); function hex($s) { $h = ''; for ($i = 0; $i < strlen($s); $i++) { $h .= dechex(ord($s[$i])) . ' '; } return $h; }

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46.14 ms | 402 KiB | 5 Q