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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(is_numeric('123')); var_dump(is_numeric('123foo')); var_dump(is_numeric('foo')); var_dump(is_numeric('1.2')); var_dump(is_numeric('1,2'));
based on FDRIl
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(false) bool(false) bool(true) bool(false)