slow.php

<?php
    /* Create an array and populate some values. */
    $arr = array();
    for ($i = 0; $i < 100000; $i++) {
        $arr[$i] = $i;
    }

    $foo = &$arr; // comment out me
    for ($i = 0; $i < 100000; $i++) {
        $bar = $arr; // or comment out me
    }
    // and I'll perform fast
?>