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run code in 300+ PHP versions simultaneously
<?php $array = array("hello", "world", "foobar"); $value1 = "foobar"; $value2 = "test"; if(!in_array($value1, $array)) $array[] = $value1; // this will not be added because foobar already exists in the array if(!in_array($value2, $array)) $array[] = $value2; // this will be added because it does not exist in the array print_r($array); ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Array ( [0] => hello [1] => world [2] => foobar [3] => test )

preferences:
322.96 ms | 406 KiB | 423 Q