PHP Manual: Manipulation

public mixed Threaded::shift()

Shifts an item from the objects property table

This function has no parameters.

The first item from the objects property table

Example #1 Shifting the first item from the property table of a threaded object

<?php
$safe = new Threaded();

while (count($safe) < 10)
    $safe[] = count($safe);

var_dump($safe->shift());
?>

The above example will output:

int(0)