Rechercher une fonction PHP

strip_tags

(PHP 4, PHP 5, PHP 7)

strip_tagsStrip HTML and PHP tags from a string

Description

string strip_tags ( string $str [, string $allowable_tags ] )

This function tries to return a string with all NULL bytes, HTML and PHP tags stripped from a given str. It uses the same tag stripping state machine as the fgetss() function.

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Parameters

str

The input string.

allowable_tags

You can use the optional second parameter to specify tags which should not be stripped.

Note:

HTML comments and PHP tags are also stripped. This is hardcoded and can not be changed with allowable_tags.

Note:

In PHP 5.3.4 and later, self-closing XHTML tags are ignored and only non-self-closing tags should be used in allowable_tags. For example, to allow both <br> and <br/>, you should use:

<?php
strip_tags
($input'<br>');
?>

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Return Values

Returns the stripped string.

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Changelog

Version Description
5.3.4 strip_tags() ignores self-closing XHTML tags in allowable_tags.
5.0.0 strip_tags() is now binary safe.

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Examples

Example #1 strip_tags() example

<?php
$text 
'<p>Test paragraph.</p><!-- Comment --> <a href="https://www.gaudry.be/en/php-rf-#fragment">Other text</a>';
echo 
strip_tags($text);
echo 
"\n";

// Allow <p> and <a>
echo strip_tags($text'<p><a>');
?>

The above example will output:

Test paragraph. Other text
<p>Test paragraph.</p> <a href="#fragment">Other text</a>

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Notes

Warning

Because strip_tags() does not actually validate the HTML, partial or broken tags can result in the removal of more text/data than expected.

Warning

This function does not modify any attributes on the tags that you allow using allowable_tags, including the style and onmouseover attributes that a mischievous user may abuse when posting text that will be shown to other users.

Note:

Tag names within the input HTML that are greater than 1023 bytes in length will be treated as though they are invalid, regardless of the allowable_tags parameter.

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See Also

Find a PHP function

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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.strip-tags.html

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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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