- var_dump: documentation ( source)
- array_unshift: documentation ( source)
- array_shift: documentation ( source)
<?php
echo "Our array:\n";
$arr = [ 1, 2, 3 ];
var_dump($arr);
echo "First unshift\n";
echo array_unshift($arr, 0), "\n";
var_dump($arr);
echo "Shift\n";
echo array_shift($arr), "\n";
var_dump($arr);