php function that takes a decimal value and format to hour and minutes

formatToHourMinutes.php

<?php 
function formatToHourMinutes($decTime) {

    $negative = false;
        if(!is_numeric($decTime))return $decTime;
        if($decTime == 0)return '-';
        if($decTime < 0){
            $negative = true;
            $decTime = abs($decTime);//$decTime = -1 * abs($decTime);
        }
        
        $hour = floor($decTime);
        $min = round(60 * ($decTime - $hour));
        
        if($min !== 60) $time = sprintf('%02d:%02d', $hour, $min);
        if($min == 60) $time = sprintf('%02d:%02d', $hour +1, '00');//to counter rounding of .9999999 to 60 minutes
        //$time = sprintf('%02d:%02d', $hour, $min);
        if ($time == '00:00')$time = '-';
        if($negative == true)return '-'.$time;

        return $time;
}