3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( 0 => 0); print_r(isset($a)); print_r(isset($a[0]);
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.30
Parse error: syntax error, unexpected ';' in /in/IbR4Y on line 4
Process exited with code 255.
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198.82 ms | 1395 KiB | 67 Q