php通过array_push()函数添加多个变量到数组末尾的方法

<?php
$alpha = array("a", "b", "c");
$final = array_push($alpha, "d","e");
print "There are $total elements in \$alpha<p>";
foreach ( $alpha as $val ) {
 print "$val<br/>";
}
print "</p>";
?>