3v4l.org

run code in 300+ PHP versions simultaneously
<?php testme(); function testme() { $data='b=2'; parse_str($data); echo $b; if(isset($b)) { echo "good\n"; } else { echo "bad\n"; } echo $b; if(isset($b)) { echo "good\n"; } else { echo "bad\n"; } }

preferences:
35.87 ms | 402 KiB | 5 Q