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run code in 150+ php & hhvm versions
Bugs & Features
<?php function per2num($per){return (float)$per/100;} foreach(array("0.58%","25%","2.58%","25.00%") as $test) echo $test,":\t",per2num($test),"\r\n";
based on nDlVD
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0RC5
0.58%: 0.0058 25%: 0.25 2.58%: 0.0258 25.00%: 0.25