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run code in 300+ PHP versions simultaneously
<?php $a = new \stdClass(); $a->rec = $a; print_r($a); var_dump($a); $a = new class() { public function __toString(): string { static $c = 0; if ($c++ > 1) { throw new \Exception('ex'); } return '1'; } }; echo $a, $a, $a;

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20.62 ms | 405 KiB | 5 Q