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<?php $var = '10.25E'; $number = (float)$var; $letter = substr($var, strlen($number)); var_dump(array($number, $letter));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> float(10.25) [1]=> string(1) "E" }