- var_dump: documentation ( source)
<?php
$splstack = new \SplStack();
$splstack->push(10);
$splstack->push(11);
$splstack->push(12);
$splstack->push(13);
$splstack->push(14);
$val1 = $this->splstack->pop();
$val2 = $this->splstack->pop();
var_dump($val1, $val2);