Question

php 正则 获取第二个<span>

<div class="content">
<span>1<span>
<span>2<span>
</div>
请问 php 正则如何获取到第二个span的值

Answer 1

<?php $str='<div class="content">
<span>1</span>
<span>2</span>
</div>' ; 
$reg='/<span>((?:(?!<\/span>)[\s\S])*)<\/span>/i';
preg_match_all($reg ,$str,$mat); 

$str= preg_replace($reg,"$1", $mat[0][1]);
echo ($str); ?>

Answer 2

<span>2<span>闭合标签写错了吧，应该是</span>对不？

(?<=<span>)[^<>]+(?=<\/?span>\s+<\/div>)