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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(substr("string", "3")); var_dump(substr("string", "string"));
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(3) "ing" Warning: substr() expects parameter 2 to be integer, string given in /in/gPf1q on line 5 NULL
Output for 5.3.0 - 5.6.28
string(3) "ing" Warning: substr() expects parameter 2 to be long, string given in /in/gPf1q on line 5 NULL
Output for 4.3.0 - 5.2.17
string(3) "ing" string(6) "string"