<?php $array_1 = array_map(function($n) { return round($n, 1); }, range(1, 1.9, 0.1)); var_dump(in_array(1.7, $array_1)); $array_2 = array_map(function($n) { return round($n, 1); }, range(0, 0.9, 0.1)); var_dump(in_array(0.3, $array_2)); var_dump(in_array(0.6, $array_2)); var_dump(in_array(0.7, $array_2)); //=>it return false;
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