PHP-求段PHP正则代码求大神帮忙

Question

<div class="ks-waterfall item">
            <div class="photo">
              <a title="浮云无视" href="链接b" data-pinit="registered"  width="210"  height="210" />
                  <span class="alpha-bg"></span>
              </a>
              <div class="mask">
                <span class="like">
                  <a class="J_Trigger" href="#" data-item="链接A"><em class="J_Counter">0</em></a>
                </span>
              </div>
            </div>
            <ul class="details">
              <li class="price"><em>￥306</em><span class="sales">
                                    <i class="icon-tamll"></i>
                                已售出4123件</span>
              </li>
                                                                  <li class="comment-info">
                        <span class="comment-title">jixianghome99:</span>
                        <span title="浮云无视">浮云无视</span>
                      </li>
                                            <li class="more">
                <span class="like">
                  <a href="#" class="hotsale-btn tiny J_Trigger" data-item="13910590073">
                    <span><i></i> <em class="J_Counter">0</em> </span>
                  </a>
                </span>
                <span class="comment">
                  <a class="hotsale-btn tiny" href="链接b">
                    <span><i></i> 6721 </span>
                  </a>
                </span>
              </li>
            </ul>
          </div>

Answer 1

<?php
$preg = array('/(?is)href="链接b"/');
$replace = array('href="链接A"');

$str = <<<EOT
<div class="ks-waterfall item">
<div class="photo">
<a title="浮云无视" href="链接b" data-pinit="registered" width="210" height="210" />
<span class="alpha-bg"></span>
</a>
<div class="mask">
<span class="like">
<a class="J_Trigger" href="#" data-item="链接A"><em class="J_Counter">0</em></a>
</span>
</div>
</div>
<ul class="details">
<li class="price"><em>￥306</em><span class="sales">
<i class="icon-tamll"></i>
已售出4123件</span>
</li>
<li class="comment-info">
<span class="comment-title">jixianghome99:</span>
<span title="浮云无视">浮云无视</span>
</li>
<li class="more">
<span class="like">
<a href="#" class="hotsale-btn tiny J_Trigger" data-item="13910590073">
<span><i></i> <em class="J_Counter">0</em> </span>
</a>
</span>
<span class="comment">
<a class="hotsale-btn tiny" href="链接b">
<span><i></i> 6721 </span>
</a>
</span>
</li>
</ul>
</div>
EOT;

echo preg_replace($preg, $replace, $str);

这是个比较简单 具体还得看你的链接

Answer 2

需要正则么 ... 字符串替换 str_replace 就可以了 ..?