strip_tags

Function • Params and return types changed in PHP 8.0

Strip HTML and PHP tags from a string.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

strip_tags Function synopsis

strip_tags(string $string, array|string|null $allowed_tags = null): string

Parameters

$string

Typestring

The input string.

$allowed_tags

OptionalTypearray|string|nullDefault valuenull

You can use the optional second parameter to specify tags which should not be stripped. These are either given as string, or as of PHP 7.4.0, as array. Refer to the example below regarding the format of this parameter.

Return value

Typestring

Returns the stripped string.

Changes to the strip_tags Function

PHP 8.0

  • Return type added: string
  • Parameter name of parameter #1 changed: $str to $string
  • Parameter type added for parameter #1 ($string): string
  • Parameter name of parameter #2 changed: $allowable_tags to $allowed_tags
  • Parameter type added for parameter #2 ($allowed_tags): array|string|null
  • Parameter default value added for position #2 ($allowed_tags): null
- strip_tags($str, $allowable_tags)
+ strip_tags(string $string, array|string|null $allowed_tags = null): string

strip_tags Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes