Sample of difference on minutes between two hours on PHP

diffminutes.php

<?php

function diffMins($ihour, $imin, $ehour, $emin)
{
    if($ehour>=$ihour)
    {
        $hours=$ehour-$ihour;
    }
    else
    {
        $hours=(24-$ihour)+$ehour;
    }

    $mins=$emin-$imin;
    
    $tmins=($hours*60) + $mins;

    echo("Entre las $ihour:$imin y las $ehour:$emin\n");
    echo("\tLa diferencia es de $hours h y $mins m con un total de $tmins mins\n");
}

diffMins(01,00,03,00);
diffMins(01,00,03,30);
diffMins(01,00,02,59);
diffMins(01,00,03,59);
diffMins(23,00,03,00);
diffMins(23,00,03,30);
diffMins(23,00,02,59);
diffMins(23,00,03,59);
diffMins(22,00,05,00);
diffMins(22,00,05,30);
diffMins(22,00,05,59);
diffMins(22,00,00,59);
diffMins(01,30,01,20);
diffMins(01,30,02,20);
diffMins(01,40,03,30);
diffMins(01,50,02,49);
diffMins(01,59,03,58);
diffMins(01,59,04,00);
diffMins(00,30,01,20);
diffMins(00,40,03,30);
diffMins(00,50,02,49);
diffMins(00,59,03,58);
diffMins(00,59,04,00);
diffMins(00,00,00,01);
diffMins(00,00,01,01);
diffMins(00,00,00,59);
diffMins(00,00,01,59);
diffMins(00,00,23,59);