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run code in 300+ PHP versions simultaneously
<?php $a = "2d9"; $a++; $a++; echo $a; $a = "2d9"; $a+=2; echo $a; $a = "2d9"; $a++; echo $a;
Output for git.master, git.master_jit, rfc.property-hooks
3 Warning: A non-numeric value encountered in /in/5mGWA on line 4 42e0

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