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Description

Checks for invalid UTF8 in a string. This can be one step in sanitizing input data. For complete sanitizing, including checking for valid UTF8, use one of the sanitize_*() functions.

Usage

<?php $string = wp_check_invalid_utf8( $string, $strip ); ?>

Parameters

$string

(string) (required) the string to be checked

Default: None

$strip

(boolean) (optional) strip out invalid chars?

Default: false

Return Value

(string) 

The checked string, optionally with invalid chars stripped. Empty string is returned if passed string value is invalid UTF8

Examples

<?php $string = wp_check_invalid_utf8( $_POST['description'], true ); 
if ( '' == $string ) die('Your description text used an invalid charset, it must be UTF8'); ?>

Notes

The source code comments suggest that actually stripping invalid characters is not recommended. Uses the PHP iconv module which may not be available on some installations.

Change Log

Since: 2.8.0

Source File

• wp_check_invalid_utf8() is located in wp-includes/formatting.php

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