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run code in 300+ PHP versions simultaneously
<?php $null = null; $zero = 0; $empty_string = ''; $zero_float = 0.0; $true = true; $false = false; var_dump(empty($null)); var_dump(empty($zero)); var_dump(empty($empty_string)); var_dump(empty($zero_float)); var_dump(empty($true)); var_dump(empty($false));
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 - 5.5.36, 5.6.0 - 5.6.22, 7.0.0 - 7.0.20, 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 - 8.3.6
bool(true) bool(true) bool(true) bool(true) bool(false) bool(true)
preferences:
232.99 ms | 405 KiB | 361 Q