overhead performance test

overheadPerformanceTest.php

<?php

class mod {
    public function __construct(private $aMod) {}
    
    public function map($cCall) {
        $this->aMod = array_map($cCall, $this->aMod);
        return $this;
    }
    
    public function unique() {
        $this->aMod = array_unique($this->aMod);
        return $this;
    }
    
    public function filter() {
        $this->aMod = array_filter($this->aMod);
        return $this;
    }
}

function test1 ($a) {
    (new mod($a))->map(function ($b) {
        return $b;
    })->unique()->filter();
}


function test2($a) {
    $a = array_filter(
        array_unique(
            array_map(function ($b) {return $b;}, $a)
            )
            );
}



$iTests = 10000;
$a = range(0, 500);

$aResult = [];

for ($i = 0; $i < $iTests; $i++) {
    $fStart = microtime(true);
    test1($a);
    $aResult[1][] = round(microtime(true) - $fStart, 9);
}

for ($i = 0; $i < $iTests; $i++) {
    $fStart = microtime(true);
    test2($a);
    $aResult[2][] = round(microtime(true) - $fStart, 9);
}

foreach($aResult as $iTest => $aTimes) {
    echo "{$iTest} => " . (array_sum($aTimes) / count($aTimes)) . "\n";
}