Php > Date Time sample source codes

Calculating Time in Php

Calculating Time in Php

<? 

Function TimeCalculate ($o, $time1, $time2) { 
    if ($o == '+') { 
        $a = substr($time1, 0, 1) + substr($time2, 0, 1); 
        $b = substr($time1, 2, 2) + substr($time2, 2, 2); 
        if ($b >= 60) { 
            $a = $a + 1; 
            $b = $b - 60; 
            if ($b == 0) { 
                $b = '00'; 
            } 
        } 
        return $a . ":" . $b; 
    } else if ($o == '-') { 
        $a_1 = substr($time1, 0, 1); 
        $b_1 = substr($time2, 0, 1); 
        $a_2 = substr($time1, 2, 2); 
        $b_2 = substr($time2, 2, 2); 
        $a = $a_1 - $b_1; 
        $b = $a_2 - $b_2; 
        return $a . ":" . $b; 
    } 
} 

echo TimeCalculate ('-','2:50', '1:20'); 

echo "<br>"; 

echo TimeCalculate ('+','2:50', '1:20'); 

?>