[Benchmark Loops] Benchmark of FOR vs FOREACH loop functions in php #php #benchmark

benchmark-for-vs-foreach.php

<?php
$a = array();
for ($i = 0; $i < 100000; $i++) {
    $a[] = $i;
}

$start = microtime(true);
foreach ($a as $k => $v) {
    $a[$k] = $v + 1;
}
echo "1- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
foreach ($a as $k => &$v) {
    $v = $v + 1;
}
echo "2- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
foreach ($a as $k => $v) {}
echo "3- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
foreach ($a as $k => &$v) {}
echo "4- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
$countFor = count($a);
for ($i=0;$i<$countFor;$i++) {
	$a[$i] = $a[$i]+1;
}
echo "5- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
$countFor = count($a);
for ($i=0;$i<=$countFor;$i++) {}
echo "6- Completed in ", microtime(true) - $start, " Seconds\n";

$start = microtime(true);
$countFor = count($a);
for ($i=0;$i<=$countFor;$i = $i+1) {}
echo "7- Completed in ", microtime(true) - $start, " Seconds\n";