PHP strip_tags() Function Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report The strip_tags() function is an inbuilt function in PHP which is used to strips a string from HTML, and PHP tags. This function returns a string with all NULL bytes, HTML, and PHP tags stripped from a given $str. Syntax: string strip_tags( $str, $allowable_tags ) Parameters: This function accepts two parameters as mentioned above and described below: $string: It is a required parameter that specifies the string to be check.$allow: It is an optional parameter that specifies allowable tags. These tags will not be removed. Return Value: This function Returns the stripped string. Exceptions: This function strip HTML comments and PHP tags. It can not be used this in $allow tags because this is already hardcoded.PHP 5.3.4 and later versions, ignored the self-closing XHTML tagsstrip_tags() does not validate the HTML. Below programs illustrate the strip_tags() function in PHP: Program 1: PHP <?php // PHP programme to illustrate // strip_tags function without $allow parameter echo strip_tags("Hello <b>GeeksforGeeks!</b>"); ?> Output: Hello GeeksforGeeks! Program 2: PHP <?php // PHP programme to illustrate // strip_tags function with $allow parameter echo strip_tags("Hello <b><i>GeeksforGeeks!</i></b>", "<b>"); ?> Output Hello <b>GeeksforGeeks!</b> Related Articles: PHP | str_split() FunctionPHP | chop() Function Reference: https://www.php.net/manual/en/function.strip-tags.php Comment More infoAdvertise with us Next Article PHP Syntax R R_Raj Follow Improve Article Tags : Web Technologies PHP PHP-string PHP-function Similar Reads PHP Tutorial PHP is a popular, open-source scripting language mainly used in web development. It runs on the server side and generates dynamic content that is displayed on a web application. 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