<?php function checkFloat(&$var) { if (is_float($var) || is_numeric($var)) { $var = unpack("f", pack("f", $var))[1]; } else { throw new \Exception("Expect float."); } } $var = 0.9; checkFloat($var); var_dump($var); $var = 0.7; checkFloat($var); var_dump($var); $var = 0.3; checkFloat($var); var_dump($var); $var = 0.1; checkFloat($var); var_dump($var);
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