int array_push(array array, mixed var, [...]);
array_push() treats array as a stack, and pushes the passed variables onto the end of array. The length of array increases by the number of variables pushed. Has the same effect as:
$array = $var;repeated for each var.
Returns the new number of elements in the array.
Example 1. array_push() example
$stack = array(1, 2); array_push($stack, "+", 3);
Note: This function was added in PHP 4.0.