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run code in 300+ PHP versions simultaneously
<?php echo ($x = '2d9'); echo(PHP_EOL); $x++; echo ($x); // interprets '2d9' as hex, now $x == '2e0' echo(PHP_EOL); $x++; echo(PHP_EOL); echo ($x); // interprets '2e0' as a float, now $x == 3
Output for git.master, git.master_jit, rfc.property-hooks
2d9 2e0 3

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