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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(ctype_digit(""));
based on QJE1b
Output for 4.4.1 - 4.4.9, 5.1.0 - 7.3.0rc4
bool(false)
Output for 4.3.0 - 4.4.0, 5.0.0 - 5.0.5
bool(true)