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run code in 200+ php & hhvm versions
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<?php $a ='0.00001'; var_dump(floatval($a), floatval($a) < 0, bccomp($a, 0, 2));
based on KhrPA
Output for 5.3.21 - 5.5.28, 5.5.31 - 5.5.33, 5.5.35 - 5.6.12, 5.6.16 - 5.6.19, 5.6.21 - 7.0.4, 7.0.6 - 7.2.0
float(1.0E-5) bool(false) int(0)
Output for 7.0.5
Fatal error: Uncaught Error: Call to undefined function bccomp() in /in/qV9vK:4 Stack trace: #0 {main} thrown in /in/qV9vK on line 4
Process exited with code 255.
Output for 5.5.29 - 5.5.30, 5.5.34, 5.6.13 - 5.6.15, 5.6.20
Fatal error: Call to undefined function bccomp() in /in/qV9vK on line 4
Process exited with code 255.