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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(is_numeric("-32423 4")); var_dump(floatval("1e-4"));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
bool(false) float(0.0001)