Jump to content

Recommended Posts

Hi,

 

Sorry if this has been asked before, I did a search, but couldn't find a close match to my problem.

 

Summary: Using preg_match with expression returns 2 matches, but using the same expression with preg_replace has no effect.

 

Here is my code:

 

<?php
    header ("Content-Type: text/javascript");
    
    $html = '<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>about this site</title>
<style type="text/css">
<!--
body,td,th {
    font-family: Arial, Helvetica, sans-serif;
}
body {
    background-image: url(mw/w_back.jpg);
}
.style1 {
    font-size: 36px;
    font-weight: bold;
}
-->
</style></head>

<body>
<a href="../">[bACK]</a><br>
<table border="0" cellspacing="5" cellpadding="5">
  <tr>
    <td align="center" valign="top"><table width="80%" border="0" align="center" cellpadding="5" cellspacing="5" bgcolor="#F0FCFF">
      <tr>
        <td><p align="center" class="style1">wonderlandhistory.net</p>
            <p align="left">This  website is dedicated to the blah blah blah
          </td>
      </tr>
    </table></td>
  </tr>
</table>
<a href="../">[bACK]</a>
</body>
</html>
';

preg_match("/<body>(.*)</body>/s",$html, $body);
//print_r($body)."  ";
$ibody = $body[1];
echo $ibody;
echo "  ";

preg_match_all    ('/<a href="../">[bACK]</a>/s', $ibody, $newbody);
print_r($newbody);
echo "  ";

preg_replace    ('/<a href="../">[bACK]</a>/s',"",$ibody);
echo $ibody;
echo "  ";


?>

 

------------------------------------------------------------------------------

 

Here is the (unexpected) output:  :(

 

<a href="../">[bACK]</a><br>
<table border="0" cellspacing="5" cellpadding="5">
  <tr>
    <td align="center" valign="top"><table width="80%" border="0" align="center" cellpadding="5" cellspacing="5" bgcolor="#F0FCFF">
      <tr>
        <td><p align="center" class="style1">wonderlandhistory.net</p>
            <p align="left">This  website is dedicated to the blah blah blah
          </td>
      </tr>
    </table></td>
  </tr>
</table>
<a href="../">[bACK]</a>


Array
(
     => Array        (
             => <a href="../">[bACK]</a>[1] => <a href="../">[bACK]</a>
        )

)



<a href="../">[bACK]</a><br>
<table border="0" cellspacing="5" cellpadding="5">
  <tr>
    <td align="center" valign="top"><table width="80%" border="0" align="center" cellpadding="5" cellspacing="5" bgcolor="#F0FCFF">
      <tr>
        <td><p align="center" class="style1">wonderlandhistory.net</p>
            <p align="left">This  website is dedicated to the blah blah blah
          </td>
      </tr>
    </table></td>
  </tr>
</table>
<a href="../">[bACK]</a>


-------------------------------------------------

 

Can someone tell me why preg_match finds both instances of <a href="../">[bACK]</a>,

but preg_replace is unable to replace those instances using exactly the same expression?

 

Will greatly appreciate any and all replies.

 

Ian

Link to comment
https://forums.phpfreaks.com/topic/170063-problem-with-preg_replace/
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.