Miscellany

<?php
function array_insert_before_last(&$a, $value)
{
    $keys = array_keys($a);
    $i = 1;
    $x = count($keys);
    $new = array();
    foreach ( $keys as $key )
    {
        if ( $i++ == $x )
        {
            $new[] = $value;
        }
        $new[] = $a[$key];
    }
    $a = $new;
}
$a = array();
$a[] = "first";
$a[] = "last";
array_insert_before_last($a, "middle");
print_r($a);
?>