array_slice()
<?php $a=array("red","green","blue","yellow","brown"); print_r(array_slice($a,2)
); //Array ( [0] => blue [1] => yellow [2] => brown ) ?>
trim()
<?php
$str='1,2,3,4,';
trim($str,',');
?>
array_filter($array)
去除数组中值为 ' ' 和 NULL 和 false 的项
转载于:https://www.cnblogs.com/gyrgyr/p/5953935.html