3v4l.org

run code in 300+ PHP versions simultaneously
<?php testme(); function testme() { $data='b=2'; parse_str($data); if(isset($b)) { echo 'isset b='.$b,"\n"; } else { echo 'notset b='.$b,"\n"; } if(isset($b)) { echo 'isset b='.$b,"\n"; } else { echo 'no b='.$b,"\n"; } }

preferences:
34.84 ms | 402 KiB | 5 Q