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 tags
- strip_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>neveropen!</b>"); ?> |
Output:
Hello neveropen!
Program 2:
PHP
<?php // PHP programme to illustrate // strip_tags function with $allow parameter echo strip_tags("Hello <b><i>neveropen!</i></b>", "<b>"); ?> |
Output
Hello <b>neveropen!</b>
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