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run code in 300+ PHP versions simultaneously
<?php $a = array(); $b = $a['foo']; $c = $a[1]; $d = 5; $e = $d['bar'];
Output for git.master, git.master_jit
Warning: Undefined array key "foo" in /in/ZYUHh on line 4 Warning: Undefined array key 1 in /in/ZYUHh on line 5 Warning: Trying to access array offset on value of type int in /in/ZYUHh on line 7
Output for rfc.property-hooks
Warning: Undefined array key "foo" in /in/ZYUHh on line 4 Warning: Undefined array key 1 in /in/ZYUHh on line 5 Warning: Trying to access array offset on int in /in/ZYUHh on line 7

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