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run code in 300+ PHP versions simultaneously
<?php $a = '0123456789'; echo 'mb_substr($a, 0, -1)', @mb_substr($a, 0, -1), "\n"; echo 'mb_substr($a, -1)', @mb_substr($a, -1), "\n";
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
mb_substr($a, 0, -1)012345678 mb_substr($a, -1)9
preferences:
266.81 ms | 406 KiB | 344 Q