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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(substr('', 0, 5)); var_dump(substr(null, 0, 5)); var_dump(sprintf("%s", false));
based on MTHuA
Output for 7.0.0 - 7.2.0
string(0) "" string(0) "" string(0) ""
Output for 5.3.20 - 5.6.28
bool(false) bool(false) string(0) ""