CODEWITHSUNDEEP
phpregex
mus lim
mus lim

Reputation: 13

php remove all attributes from a tag

Here is my code:

$content2= preg_replace("/<([a-z][a-z0-9]*)[^>]*?(\/?)>/i",'<$1$2>', $content1);

This code removes all attributes from all tags in my website, but what I want is to only remove attributes from the form tag. This is what I have tried:

$content2 = preg_replace("/<form([a-z][a-z0-9]*)[^>]*?(\/?)>/i",'<$1$2>', $content1);

and

$content2 = preg_replace("/<(form[a-z][a-z0-9]*)[^>]*?(\/?)>/i",'<$1$2>', $content1);

Upvotes: 0

Views: 630

Answers (2)

chris85
chris85

Reputation: 23892

This should do it for you.

<?php
$content1 = '<form method="post">test</form><form>2</form><form action=\'test\' method="post" type="blah"><img><b>bold</b></form>';
$content2 = preg_replace("~<form\s+.*?>~i",'<form>', $content1);
echo $content2;

Output:

<form>test</form><form>2</form><form><img><b>bold</b></form>

Explanation and demo: https://regex101.com/r/oA1fV8/1

The \s+ is requiring whitespace after the opening form tag if we have that we presume there is an attribute after so we use .*? which takes everything until the next >. We don't need capture groups because the only thing you want is an empty form element, right?

Upvotes: 1

Allkin
Allkin

Reputation: 1098

Answer from a related question:

<?php
function stripArgumentFromTags( $htmlString ) {
    $regEx = '/([^<]*<\s*[a-z](?:[0-9]|[a-z]{0,9}))(?:(?:\s*[a-z\-]{2,14}\s*=\s*(?:"[^"]*"|\'[^\']*\'))*)(\s*\/?>[^<]*)/i'; // match any start tag

    $chunks = preg_split($regEx, $htmlString, -1,  PREG_SPLIT_DELIM_CAPTURE);
    $chunkCount = count($chunks);

    $strippedString = '';
    for ($n = 1; $n < $chunkCount; $n++) {
        $strippedString .= $chunks[$n];
    }

    return $strippedString;
}
?>

Then use call call it like this

$strippedTag = stripArgumentFromTags($initialTag);

Related question with more answers

Upvotes: 0

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