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run code in 300+ PHP versions simultaneously
<?php $trueVar = true; $falseVar = false; $nullVar = null; $emptyVar = ""; $result1 = (!isset($trueVar) || $trueVar) ? 1 : 0; $result2 = (!isset($falseVar) || $falseVar) ? 1 : 0; $result3 = (!isset($nullVar) || $nullVar) ? 1 : 0; $result4 = (!isset($emptyVar) || $emptyVar) ? 1 : 0; var_dump($result1); var_dump($result2); var_dump($result3); var_dump($result4);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
int(1) int(0) int(1) int(0)
preferences:
134.94 ms | 407 KiB | 5 Q