php函数，入栈与出栈

<?php

$stack=array("Simon","Elaine");//定义数组

array_push($stack,"Helen","Peter");//入栈

print_r($stack);

<?php

$stack=array("Simon","Elaine");//定义数组

array_unshift($stack,"Helen","Peter");//入栈

print_r($stack);

?>

<?php

$stack=array("Simon","Elaine","Helen","Peter");

echo array_pop($stack)."<br>";//出栈

print_r($stack);

?>

<?php

$stack=array("Simon","Elaine","Helen","Peter");

echoarray_shift($stack)."<br>";//出栈

print_r($stack);

?>