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:
<?php $array[] = $var; ?>
repeated for each var .
Note: If you use array_push() to add one element to the array it's better to use $array[] = because in that way there is no overhead of calling a function.
Note: array_push() will raise a warning if the first argument is not an array. This differs from the $var[] behaviour where a new array is created.