Need help modifiying a html document

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November 20th, 2002, 06:14 AM

retr0

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Need help modifiying a html document

I have a PHP problem I hope that someone may be able to help me.

I need to modifiy a html document string by striping out certain html tags residing [outside of], [html] hightlighted <?php ?> PHP script tags.

i.e.

(<\?) == <?

(\?&lt); == ?>

$str="
<p>I am a html string of text I must be parsed</p><br>
<?php print"I am highlighted html php code and I must not be parsed or effected by the expression"; ?<
I am a another html string of text and I must be parsed
<?php print"I am more html php code"; ?<
etc...
";

I am unsure how to write a Regular Expression or use string macthing to do this. Any ideas?

Gregory

November 20th, 2002, 04:45 PM

crazytrain81

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for the regular expression, you just want to find what's between the <?php and ?<, so you can use

PHP Code:


		
			
 $string = preg_match(/<?php .* ?<);

to find the chunks one by one, and then do whatever you want with them.. you need slashes before the ? but this php highlighting is gay and removes them

Last edited by crazytrain81 : November 20th, 2002 at 04:47 PM.

November 21st, 2002, 07:14 AM

retr0

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crazytrain81

I'm sure that I can do this in PHP. I just don't know how :)

The code below works if <?php and ?> will appear on their own line in a file.

If they are embedded in a line like this then this will not work:

PHP Code:


		
			
<a href='<?php echo "$PHP_SELF?op=edit"; ?>'>edit</a>

I need to modify the code below to work for those cases as well any idea on how I can do this? The test file should really also be in a string as it is not a remote file...

Or maybe I could use

PHP Code:


		
			
 $string = preg_match(/<?php .* ?<);

To skip over the highlighted php html code and then strip all the tags out side of it.

Greg :o)

Here is the test file:

<html>
<head><title>test document</title></head>
<body>
<h2>Title here</h2>
<?php
echo "hello world 1";
?>
<h3>Subtitle here</h3>
<?php
echo "hello world 2";
?>
</body>
</html>

PHP Code:


		
			
<?php



// Script demonstrates how to skip over

// php code in a file



$accumulator = "";



$file = "test_document.html";



$fp = @fopen($file,"r");



if ($fp) {



  while($line = fgets($fp,1000)) {



    if (strstr($line, "<?php")) {



      $accumulator .= $line;

      $line = fgets($fp, 1000);

      $php_end_tag_found = 0;

      while ($php_end_tag_found == 0) {

        if (strstr($line, "?>")) {

          $accumulator .= $line;

          $php_end_tag_found = 1;

        } else {

          $accumulator .= $line;

          $line = fgets($fp, 1000);

        }

      }

    } else {

      $accumulator .= strip_tags($line);

    }



  } // end outer while loop



  fclose($fp);

} else {

  echo "error opening document";

}



echo $accumulator;



?>

Last edited by retr0 : November 21st, 2002 at 07:40 AM.

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