preg_match表单中输入字段的名称 [英] preg_match name of input field inside form

问题描述

对不起，我花了2个小时试图preg_match这个表单

 < form class =form-searchmethod =postaction =/ index.php> 
< div class =form-group> 
< input id =address_boxtype =textclass =form-controlname =xvalue =onfocus =this.select（）/> 
< / div> 
< span class =btn btn -s btn-caps>< input type =submitvalue =start/>< / span> 
< / form> 
  

收件人：

  Preg_match：
 
 START =< form 
 
 WHERE action CONTAIN /index.php 
 EX：action =/ index.php或action =http://whatever.com/index.php
 
 FIND name =[A-Za-z] {1}
 
 END =< /形式> 
 
然后输出[A-Za-z] {1}匹配（应该得到x）
  

请问我该怎么做？

谢谢。

解决方案 $ p
$ b $ $ $ regex ='/< form。*（ ？< = ACTION = \ ）\ / index.php\？ > *（小于？=名= \）（[A-ZA-Z] {1}）（=？ \）* LT; \？/形式> /秒;

Sorry, i spent like 2 hours trying to preg_match this form

<form class="form-search" method="post" action="/index.php">
  <div class="form-group">
    <input id="address_box" type="text" class="form-control" name="x" value="" onfocus="this.select()" />
  </div>
<span class="btn btn-s btn-caps"><input type="submit" value="start" /></span>
</form>

To:

Preg_match:

START = <form

WHERE action CONTAIN /index.php
EX: action="/index.php" or action="http://whatever.com/index.php"

FIND name="[A-Za-z]{1}"

END = </form>

Then Output the [A-Za-z]{1} Match (Should get x)

How can i do it correctly please?

Thanks.

解决方案

Ok, this regex should do the job:

$regex = '/<form.*(?<=action=\")?\/index.php\">.*(?<=name=\")([A-Za-z]{1})(?=\").*?<\/form>/s';

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