- microtime: documentation ( source)
- array_fill: documentation ( source)
<?php
// Foreach - inline
$results = [];
$aHash = [];
$i = 0;
$tmp = '';
while ($i < 10000) {
$tmp .= 'a';
++$i;
}
$aHash = array_fill(100000000000000000000000, 100, $tmp);
unset($i, $tmp);
/* The Test */
$t = microtime(true);
foreach ($aHash as $key => $val) $aHash[$key] .= "a";
echo (microtime(true) - $t) * 1000000;