php remove html tags

strip_tags

(PHP 4, PHP 5, PHP 7, PHP 8)

strip_tags — Удаляет теги HTML и PHP из строки

Описание

Список параметров

Второй необязательный параметр может быть использован для указания тегов, которые не нужно удалять. Они указываются как строка ( string ) или как массив ( array ) с PHP 7.4.0. Смотрите пример ниже относительно формата этого параметра.

Возвращаемые значения

Возвращает строку без тегов.

Список изменений

Примеры

Пример #1 Пример использования strip_tags()

// Начиная с PHP 7.4.0, строка выше может быть записана как:
// echo strip_tags($text, [‘p’, ‘a’]);
?>

Результат выполнения данного примера:

Примечания

Эта функция не должна использоваться для предотвращения XSS-атак. Используйте более подходящие функции для этой задачи, такие как htmlspecialchars() или другие механизмы, в зависимости от контекста вывода.

Из-за того, что strip_tags() не проверяет валидность HTML, то частичные или сломанные теги могут послужить удалением большего количества текста или данных, чем ожидалось.

Смотрите также

User Contributed Notes 17 notes

Hi. I made a function that removes the HTML tags along with their contents:

Result for strip_tags($text):
sample text with tags

Result for strip_tags_content($text):
text with

Result for strip_tags_content($text, ‘‘):
sample text with

Result for strip_tags_content($text, ‘‘, TRUE);
text with

I hope that someone is useful 🙂

After upgrading from v7.3.3 to v7.3.7 it appears nested «php tags» inside a string are no longer being stripped correctly by strip_tags().

This is still working in v7.3.3, v7.2 & v7.1. I’ve added a simple test below.

A word of caution. strip_tags() can actually be used for input validation as long as you remove ANY tag. As soon as you accept a single tag (2nd parameter), you are opening up a security hole such as this:

Plus: regexing away attributes or code block is really not the right solution. For effective input validation when using strip_tags() with even a single tag accepted, http://htmlpurifier.org/ is the way to go.

Since strip_tags does not remove attributes and thus creates a potential XSS security hole, here is a small function I wrote to allow only specific tags with specific attributes and strip all other tags and attributes.

If you only allow formatting tags such as b, i, and p, and styling attributes such as class, id and style, this will strip all javascript including event triggers in formatting tags.

Note that allowing anchor tags or href attributes opens another potential security hole that this solution won’t protect against. You’ll need more comprehensive protection if you plan to allow links in your text.

a HTML code like this:

$str = ‘color is bluesize is huge
material is wood’;

$str = ‘color is blue size is huge material is wood’;

«5.3.4 strip_tags() no longer strips self-closing XHTML tags unless the self-closing XHTML tag is also given in allowable_tags.»

This is poorly worded.

The above seems to be saying that, since 5.3.4, if you don’t specify «
» in allowable_tags then «
» will not be stripped. but that’s not actually what they’re trying to say.

What it means is, in versions prior to 5.3.4, it «strips self-closing XHTML tags unless the self-closing XHTML tag is also given in allowable_tags», and that since 5.3.4 this is no longer the case.

So what reads as «no longer strips self-closing tags (unless the self-closing XHTML tag is also given in allowable_tags)» is actually saying «no longer (strips self-closing tags unless the self-closing XHTML tag is also given in allowable_tags)».

pre-5.3.4: strip_tags(‘Hello World

‘,’
‘) => ‘Hello World
‘ // strips
because it wasn’t explicitly specified in allowable_tags

5.3.4 and later: strip_tags(‘Hello World

‘ // does not strip
because PHP matches it with
in allowable_tags

Note the different outputs from different versions of the same tag:

Features:
* allowable tags (as in strip_tags),
* optional stripping attributes of the allowable tags,
* optional comment preserving,
* deleting broken and unclosed tags and comments,
* optional callback function call for every piece processed allowing for flexible replacements.

Caution: the function doesn’t fully validate tags (the more so HTML itself), it just force strips those obviously broken (in addition to stripping forbidden tags). If you want to get valid tags then use strip_attrs option, though it doesn’t guarantee tags are balanced or used in the appropriate context. For complex logic consider using DOM parser.

Here is a recursive function for strip_tags like the one showed in the stripslashes manual page.

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remove html tags

Currently, I use strip_tags, to remove all html tags from the strings I process. However, I notice lately, that it joins words, which contained in the tags removed ie

How can you get around this?

6 Answers 6

you can play around which Regex Pattern is best and what to replace 🙂

You would be better off with htmlentities()

It won’t remove the <>, but escape them.

It all depends on what output you want after stripping HTML tags. For example:

strip_tags ‘s proposal is to get rid of HTML tags without any other conversion.

that should do exactly what you’re looking for in all cases.

From your code i discover that there was no initial space in between the words Hello Word and you don’t expect the strip_tags function to add it for you, so for the strip_tags function to produce exactly what you want, i added a space after the first list tag and the result was Hello world.

You can copy and paste this code and run to see the difference.

Not the answer you’re looking for? Browse other questions tagged php strip-tags or ask your own question.

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Remove all attributes from html tags

I have this html code:

How can I remove attributes from all tags? I’d like it to look like this:

9 Answers 9

The RegExp broken down:

Please Note This isn’t necessarily going to work on ALL input, as the Anti-HTML + RegExp will tell you. There are a few fallbacks, most notably

«> and a few other broken issues. I would recommend looking at Zend_Filter_StripTags as a more full proof tags/attributes filter in PHP

‘); combined with your method to remove the attributes be safe from XSS attacks?

Here is how to do it with native DOM:

If you want to remove all possible attributes from all possible tags, do

I would avoid using regex as HTML is not a regular language and instead use a html parser like Simple HTML DOM

Another way to do it using php’s DOMDocument class (without xpath) is to iterate over the attributes on a given node. Please note, due to the way php handles the DOMNamedNodeMap class, you must iterate backward over the collection if you plan on altering it. This behaviour has been discussed elsewhere and is also noted in the documentation comments. The same applies to the DOMNodeList class when it comes to removing or adding elements. To be on the safe side, I always iterate backwards with these objects.

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I have a string like this:

6 Answers 6

Using as little code as possible? Shortest code isn’t necessarily best. However, if your HTML h3 tag always looks like that, this should suffice:

Generally speaking, using regex for parsing HTML isn’t a particularly good idea though.

(.*?) /i» the «i» just to ignore case

Something like this is what you’re looking for.

Use «is» at the end of the regex because it will cause it to be case insensitive which is more flexible.

try a preg_match, then a preg_replace on the following pattern:

It’s messy, and it should work fine only if the h3 tag doesn’t have inline javascript which might contain sequences that this regular expression will react to. It is far from perfect, but in simple cases where h3 tag is used it should work.

Haven’t tried it though, might need adjustments.

Another way would be to copy that function, use your copy, without the h3, if it’s possible.

Thanks to this other answer for the XPath query.

Above code only works if the div haves are both on the same line. what if they aren’t?

This works even if there is a line break in between but fails if the not so used | symbol is in between anyone know a better way?

This would help someone if above solutions dont work. It remove iframe and content having tag ‘-webkit-overflow-scrolling: touch;’ like i had 🙂

How to remove a div and its contents by class in PHP Just change “myclass” to whatever class your div has.

How to remove a div and its contents by ID in PHP Just change “myid” to whatever ID your div has.

If your div has multiple classes? Just change “myid” to whatever ID your div has like this.

How to remove all headings in PHP This is how to remove all headings.

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How do I remove

Below is the text I need to remove

But still am Getting

7 Answers 7

You must use this regular expression to catch

tag and all of its content:

Working example to catch and remove

tag and all of its content:

Please see live demo on Codepad

just to remove p tags you can do this

and; 2. Content of this tag will stay.

If you want to remove

If you want to remove

tags and its content

If you just need to strip all the markup, go with strip_tags().

This code removes one p-tag:

Not the answer you’re looking for? Browse other questions tagged php html or ask your own question.

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