日期:2014-05-17  浏览次数:20399 次

请教这段内容如何用正则 进行匹配
<form class="formclass" id="loginform" method="post" onsubmit="return loginform();">
  <div style="padding-bottom:5px">Username</div>
  <div style="padding-bottom:5px"><input type="text" name="username" style="width:180px"></div>
  <div style="padding-bottom:5px">Password</div>
  <div style="padding-bottom:5px"><input type="password" name="password" style="width:180px"></div>
   

  <div style="padding-bottom:5px"><div style="padding:5px 0px"><a href="javascript:void(0);" onclick="captchareload2();"><img src="modules/captcha/captcha.php?r=login" id="captchaimglogin" border="0"></a></div>
<script>function captchareload2(){
$("#captchaimglogin").attr('src','modules/captcha/captcha.php?r=login&x=34&y=75&z=119&?newtime=' + (new Date()).getTime());
}</script></div>
  <div style="padding-bottom:5px"><input type="text" name="captcha" id="captcha_login" style="width:180px"></div>
   
  <div style="padding-bottom:5px"><input type="submit" name="login" value="Login" class="orange"></div>
  </form>

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上面这段内容:

1、把 <div style="padding-bottom:5px"><div style="padding:5px 0px"><a href="javascript:void(0);" onclick="captchareload2();"><img src="modules/captcha/captcha.php?r=login" id="captchaimglogin" border="0"></a></div>
<script>function captchareload2(){
$("#captchaimglogin").attr('src','modules/captcha/captcha.php?r=login&x=34&y=75&z=119&?newtime=' + (new Date()).getTime());
}</script></div>,取出来,用正则匹配

2、匹配 在<form></form>里是否包含 第1点 的内容,有包含 输出真,没包含输出假

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我是在搞不懂了,请帮帮忙

------解决方案--------------------
PHP code
 $s=<<<html
 <form class="formclass" id="loginform" method="post" onsubmit="return loginform();">
  <div style="padding-bottom:5px">Username</div>
  <div style="padding-bottom:5px"><input type="text" name="username" style="width:180px"></div>
  <div style="padding-bottom:5px">Password</div>
  <div style="padding-bottom:5px"><input type="password" name="password" style="width:180px"></div>
    

  <div style="padding-bottom:5px"><div style="padding:5px 0px"><a href="javascript:void(0);" onclick="captchareload2();"><img src="modules/captcha/captcha.php?r=login" id="captchaimglogin" border="0"></a></div>
<script>function captchareload2(){
$("#captchaimglogin").attr('src','modules/captcha/captcha.php?r=login&x=34&y=75&z=119&?newtime=' + (new Date()).getTime());
}</script></div>
  <div style="padding-bottom:5px"><input type="text" name="captcha&quo