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run code in 300+ PHP versions simultaneously
<?php var_dump(substr('a', 0, 2)); // string(1) "a" var_dump(substr('', 0, 2)); // bool(false) var_dump(substr('a', 1)); // bool(false)
Output for 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(1) "a" string(0) "" string(0) ""
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28
string(1) "a" bool(false) bool(false)
preferences:
202.12 ms | 402 KiB | 250 Q