(PHP 4, PHP 5)
array_shift — Shift an element off the beginning of array
array_shift() shifts the first value of the array off and returns it, shortening the array by one element and moving everything down. All numerical array keys will be modified to start counting from zero while literal keys won't be touched.
The input array.
Returns the shifted value, or NULL if array is empty or is not an array.
Example #1 array_shift() example
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack);
The above example will output:
Array (  => banana  => apple  => raspberry )
and orange will be assigned to $fruit.