push
push - append one or more elements to an array
push ARRAY,LIST
Treats ARRAY as a stack, and pushes the values of LIST
onto the end of ARRAY. The length of ARRAY increases by the length of
LIST. Has the same effect as
<![CDATA[
for $value (LIST) {
$ARRAY[++$#ARRAY] = $value;
}
]]>
but is more efficient. Returns the new number of elements in the array.