switch gettype vs if is_*

bench_gettype_vs_is.php

<?php

function switch_gettype($n, $value) {
    for ($i = 0; $i < $n; ++$i) {
        switch (\gettype($value)) {
            case 'array': continue;
            case 'string': continue;
            case 'integer': continue;
            case 'NULL': continue;
            case 'boolean': continue;
            case 'double': continue;
        }
    }
}

function if_is_func($n, $value) {
    for ($i = 0; $i < $n; ++$i) {
        if (\is_array($value)) {
            continue;
        }
        if (\is_string($value)) {
            continue;
        }
        if (\is_int($value)) {
            continue;
        }
        if (null === $value) {
            continue;
        }
        if (\is_bool($value)) {
            continue;
        }
        if (\is_double($value)) {
            continue;
        }
    }
}

function switch_is_func($n, $value) {
    for ($i = 0; $i < $n; ++$i) {
        switch (true) {
            case \is_array($value): continue;
            case \is_string($value): continue;
            case \is_int($value): continue;
            case (null === $value): continue;
            case \is_bool($value): continue;
            case \is_double($value): continue;
        }
    }
}



function empty_loop($n) {
    for ($i = 0; $i < $n; ++$i) {
    }
}

function getmicrotime()
{
    $t = gettimeofday();
    return ($t['sec'] + $t['usec'] / 1000000);
}

function start_test()
{
    ob_start();
    return getmicrotime();
}

function end_test($start, $name, $overhead = null)
{
    global $total;
    global $last_time;
    $end = getmicrotime();
    ob_end_clean();
    $last_time = $end-$start;
    $total += $last_time;
    $num = number_format($last_time,3);
    $pad = str_repeat(" ", 30 - strlen($name) - strlen($num));
    if (is_null($overhead)) {
        echo $name.$pad.$num."\n";
    } else {
        $num2 = number_format($last_time - $overhead, 3);
        echo $name.$pad.$num."    ".$num2."\n";
    }
    ob_start();
    return getmicrotime();
}

function total()
{
    global $total;
    $pad = str_repeat("-", 24);
    echo $pad."\n";
    $num = number_format($total,3);
    $pad = str_repeat(" ", 24-strlen("Total")-strlen($num));
    echo "Total".$pad.$num."\n";
}

const N = 50000000;
const VALUE_STR = "str";
const VALUE_INT = 0;
const VALUE_FLOAT = 0.0;
const VALUE_NULL = null;
const VALUE_ARR = [];
const VALUE_BOOL = true;
$obj = (object)[];

$t0 = $t = start_test();
empty_loop(N);
$t = end_test($t, 'empty_loop');
$overhead = $last_time;

switch_gettype(N, VALUE_STR);
$t = end_test($t, 'switch_gettype(str)', $overhead);

if_is_func(N, VALUE_STR);
$t = end_test($t, 'if_is_func(str)', $overhead);

switch_is_func(N, VALUE_STR);
$t = end_test($t, 'switch_is_func(str)', $overhead);

switch_gettype(N, VALUE_INT);
$t = end_test($t, 'switch_gettype(int)', $overhead);

if_is_func(N, VALUE_INT);
$t = end_test($t, 'if_is_func(int)', $overhead);

switch_is_func(N, VALUE_INT);
$t = end_test($t, 'switch_is_func(int)', $overhead);

switch_gettype(N, VALUE_FLOAT);
$t = end_test($t, 'switch_gettype(float)', $overhead);

if_is_func(N, VALUE_FLOAT);
$t = end_test($t, 'if_is_func(float)', $overhead);

switch_is_func(N, VALUE_FLOAT);
$t = end_test($t, 'switch_is_func(float)', $overhead);

switch_gettype(N, VALUE_NULL);
$t = end_test($t, 'switch_gettype(null)', $overhead);

if_is_func(N, VALUE_NULL);
$t = end_test($t, 'if_is_func(null)', $overhead);

switch_is_func(N, VALUE_NULL);
$t = end_test($t, 'switch_is_func(null)', $overhead);

switch_gettype(N, VALUE_ARR);
$t = end_test($t, 'switch_gettype(arr)', $overhead);

if_is_func(N, VALUE_ARR);
$t = end_test($t, 'if_is_func(arr)', $overhead);

switch_is_func(N, VALUE_ARR);
$t = end_test($t, 'switch_is_func(arr)', $overhead);

switch_gettype(N, VALUE_BOOL);
$t = end_test($t, 'switch_gettype(bool)', $overhead);

if_is_func(N, VALUE_BOOL);
$t = end_test($t, 'if_is_func(bool)', $overhead);

switch_is_func(N, VALUE_BOOL);
$t = end_test($t, 'switch_is_func(bool)', $overhead);

switch_gettype(N, $obj);
$t = end_test($t, 'switch_gettype(obj)', $overhead);

if_is_func(N, $obj);
$t = end_test($t, 'if_is_func(obj)', $overhead);

switch_is_func(N, $obj);
$t = end_test($t, 'switch_is_func(obj)', $overhead);


total();

output.txt

$ php tests/bench_gettype_vs_is.php
empty_loop               0.399
switch_gettype(str)      3.641    3.241
if_is_func(str)          0.788    0.389
switch_is_func(str)      0.787    0.388
switch_gettype(int)      3.933    3.533
if_is_func(int)          0.993    0.593
switch_is_func(int)      1.019    0.620
switch_gettype(float)    5.128    4.728
if_is_func(float)        1.719    1.320
switch_is_func(float)    1.798    1.399
switch_gettype(null)     4.117    3.717
if_is_func(null)         1.229    0.829
switch_is_func(null)     1.224    0.825
switch_gettype(arr)      3.257    2.858
if_is_func(arr)          0.590    0.190
switch_is_func(arr)      0.586    0.187
switch_gettype(bool)     4.604    4.205
if_is_func(bool)         1.449    1.049
switch_is_func(bool)     1.473    1.074
switch_gettype(obj)      4.933    4.533
if_is_func(obj)          1.698    1.298
switch_is_func(obj)      1.834    1.435
------------------------
Total             47.197


$ php -v
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