Online PHP editor | perf for U4IRs

@ 2012-12-27T23:51:30Z

<?php


function test1() {
    $str = 'derp';
    if ($str != 'files' && $str != 'something' && $str != 'Derrr') {
        return;
    }
    return;
}



function test2() {
    $str = 'derp';
    switch ($str) {
        case 'files':
        case 'something':
        case 'Derrr':
        break;
        default:
        return;
    }
    return;
}
function runTest1() {
	$start1 = microtime(1);
	for ($i = 1; $i < 10000; $i++) {
    	test1();
	}
	$start1 -= microtime(1);
    return $start1;
}

function runTest2()
	$start2 = microtime(1);
	for ($i = 1; $i < 10000; $i++) {
 	    test2();
	}
	$start2 -= microtime(1);
}



$start1 = runTest1();
$start2 = runTest2();


if ($start1 < $start2) {
    $perc = 100-round(($start2 / $start1) * 100,2);
	echo "Test1 is $perc"."% faster than Test2";
}


if ($start2 < $start1) {
    $perc = 100-round(($start1 / $start2) * 100,2);
	echo "Test2 is $perc"."% faster than Test1";
}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.10	0.018	0.058	12.01
5.4.9	0.024	0.052	12.01
5.4.8	0.017	0.042	12.01
5.4.7	0.020	0.038	12.01
5.4.6	0.024	0.064	12.00
5.4.5	0.018	0.040	12.01
5.4.4	0.017	0.042	12.00
5.4.3	0.021	0.069	11.99
5.4.2	0.018	0.040	11.99
5.4.1	0.015	0.044	11.99
5.4.0	0.014	0.043	11.48
5.3.20	0.020	0.044	12.68
5.3.19	0.018	0.046	12.68
5.3.18	0.025	0.052	12.67
5.3.17	0.016	0.047	12.67
5.3.16	0.027	0.064	12.67
5.3.15	0.018	0.044	12.67
5.3.14	0.015	0.047	12.66
5.3.13	0.026	0.066	12.66
5.3.12	0.019	0.044	12.66
5.3.11	0.019	0.044	12.65
5.3.10	0.030	0.062	12.12
5.3.9	0.026	0.063	12.11
5.3.8	0.016	0.045	12.10
5.3.7	0.015	0.047	12.09
5.3.6	0.031	0.061	12.08
5.3.5	0.021	0.040	12.03
5.3.4	0.019	0.044	12.02
5.3.3	0.026	0.051	11.99
5.3.2	0.029	0.062	11.77
5.3.1	0.018	0.040	11.74
5.3.0	0.020	0.042	11.72

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