3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = 1; $f1 = fn() => $a = 2; $b = &$a; $f2 = fn() => $b = 3; echo $f1(); echo $a; echo PHP_EOL; echo $f2(); echo $a; echo PHP_EOL;
Output for git.master_jit, git.master
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