CODEWITHSUNDEEP
phppreg-replace
Fero
Fero

Reputation: 13315

Need help with preg_replace

$text = '<p width="50px;" style="padding:0px;"><strong style="padding:0;margin:0;">hello</strong></p><table style="text-align:center"></table>';

$text_2 = preg_replace("/<([a-z][a-z0-9]*)[^>]*?(\/?)>/i",'<$1$2>', $text);

OUTPUT(i have given the html format here):

<p>
<strong>hello</strong>
</p>
<table></table>

My problem is all attributes must be removed but not the attributes belongs to table. That is i am expecting the out put exactly like below(HTML FORMAT):

<p>
<strong>hello</strong>
</p>
<table style="text-align:center"></table>

What should i need to modify in the above regular expression to achieve it..

Any help will be thankful and grateful....

Thanks in advance...

Upvotes: 0

Views: 131

Answers (3)

Yoshi
Yoshi

Reputation: 54659

If you want to avoid using regex, because you really souldn't use regex to work on xml/html structures, try:

<?php
$text = '<p width="50px;" style="padding:0px;"><strong style="padding:0;margin:0;">hello</strong></p><table style="text-align:center"></table>';

$dom = new DOMDocument;
$dom->formatOutput = true;
$dom->loadHtml($text);

$xpath = new DOMXpath($dom);
foreach ($xpath->query('//*[not(name()="table")]/@*') as $attrNode) {
    $attrNode->ownerElement->removeAttributeNode($attrNode);
}

$output = array();
foreach ($xpath->query('//body/*') as $childNode) {
    $output[] = $dom->saveXml($childNode, LIBXML_NOEMPTYTAG);
}

echo implode("\n", $output);

Output:

<p>
  <strong>hello</strong>
</p>
<table style="text-align:center"></table>

Upvotes: 3

Richard Parnaby-King
Richard Parnaby-King

Reputation: 14891

You are very close with your current reg-ex. You need to do a check (think it is a negative look-ahead in this case?)

<(?!table)([a-z][a-z0-9]*)[^>]*?(\/?)>

What that first bit of reg-ex is doing is checking that it does not start with 'table', then it is your regex.

Upvotes: 1

DhruvPathak
DhruvPathak

Reputation: 43265

Bit of hacky solution, but works . Try disabling TABLE tags for a while in your code, and enable them again. It would work.

see : http://codepad.org/nevLWMq8

<?php

$text = '<p width="50px;" style="padding:0px;"><strong style="padding:0;margin:0;">hello</strong></p><table style="text-align:center"></table>';

/* temporary change table tags with something not occuring in your HTML  */
$textTemp = str_replace(array("<table","/table>"),array('###','+++'),$text);


$text_2 = preg_replace("/<([a-z][a-z0-9]*)[^>]*?(\/?)>/i",'<$1$2>', $textTemp);



echo "\n\n";
 /* restore back the table tags */

$finalText =  str_replace(array("###","+++"),array("<table","/table>"),$text_2);
echo $finalText ;

?>

Upvotes: 0

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