<?php // 格式: 【二维数组】 Array( [0] => Array([topicid] => 1) [1] => Array([topicid] => 2) [2] => Array([topicid] => 6) ) //方法一: $topicid = ' '; //变量赋值为空 //用foreach 遍历下二维数组 foreach($arrs as $key=>$vals){ $topicid.=$vals['topicid'].','; } // 使用 rtrim() 函数从字符串右端删除字符: $topicid = rtrim($topicid, ','); echo $topicid; //==================================== 结果: 1,2,6 // 方法二: foreach($ProTopicid as $valueId){ $string = ''; foreach($valueId as $v){ $string.= rtrim($v.','); } }
˂script˃alert("xxx");˂/script˃
< << <script> >script> >alert("xxx");< << </script> >/script> >
3Cscript3Cscript3E3Ealert("xxx");3C3C/script3C/script3E
//alert//
/alert/