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<?php $foo = "0d9"; var_dump($foo); var_dump($foo + 0); var_dump($foo + 1); ++$foo; var_dump($foo);
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "0d9" Warning: A non-numeric value encountered in /in/7Z6Sn on line 4 int(0) Warning: A non-numeric value encountered in /in/7Z6Sn on line 5 int(1) string(3) "0e0"

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