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run code in 300+ PHP versions simultaneously
<?php $orig = new stdClass(); $orig->test = 'original'; $ptr = & $orig->test; // <--- Setting an unused reference changes the behaviour unset($ptr); // $ptr goes away and $orig->test reverts to a normal unreferenced value $copy = clone $orig; $copy->test = "modified"; die("Orig is: {$orig->test}"); // Gives 'modified' instead of 'original'
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Orig is: original
preferences:
149.28 ms | 408 KiB | 5 Q