sarah posted

prevent strip_tags from removing broken tags in php ?

ravi
answered Apr 26 '23 00:00

The strip_tags () function in PHP removes all HTML and PHP tags from a string, including any broken or malformed tags. However, if you want to keep the broken or malformed tags in the string, you can use the libxml_use_internal_errors () function and the DOMDocument class to parse the string and extract the text content, while ignoring any errors related to broken tags.

Here's an example:


$string_with_broken_tags = "<p>This is some <strong>text with a broken tag: <span>HTML tags.</p>";
$dom = new DOMDocument();
libxml_use_internal_errors(true);
$dom->loadHTML($string_with_broken_tags, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$stripped_string = $dom->textContent;
libxml_clear_errors();
echo $stripped_string;

Output:


This is some text with a broken tag: HTML tags.

In this example, the DOMDocument class is used to parse the input string and extract the text content. The libxml_use_internal_errors () function is used to enable internal error handling, and the libxml_clear_errors () function is used to clear any error messages after parsing the string.

The loadHTML () method of the DOMDocument class is used to load the HTML string into the document object. The LIBXML_HTML_NOIMPLIED and LIBXML_HTML_NODEFDTD flags are used to prevent the loadHTML () method from adding default HTML elements and a DOCTYPE declaration to the document.

Finally, the textContent property of the document object is used to extract the text content of the document, while ignoring any broken or malformed tags.

Note that this approach may not work for all cases, and may have some limitations. For example, it may not be able to handle complex or nested HTML structures, and may not be able to preserve certain formatting or layout information. It is generally recommended to use this approach only if you specifically need to retain broken or malformed tags, and to use other methods (such as regular expressions or a dedicated HTML parser library) for more general HTML processing needs.

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sarah posted

prevent strip_tags from removing broken tags in php ?

ravi answered Apr 26 '23 00:00

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