<?php function toValid($var) { return strtotime(str_replace('.', ':', sprintf('%.2f', $var))); } function getNearest($arr, $var) { $var = toValid($var); $arr = array_map('toValid', $arr); usort($arr, function($a, $b) use ($var) { return abs($a - $var) - abs($b - $var); }); return array_shift($arr); } echo date('H.i', getNearest([14.49,17.57,12.30,19.22], '13.30'));
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