This function had been marked as deprecated since 3.0.0. Use esc_url()

Checks and cleans a URL.

A number of characters are removed from the URL. If the URL is for displaying (the default behaviour) ampersands are also replaced. The ‘clean_url’ filter is applied to the returned cleaned URL.

Signature

clean_url( $url, $protocols = null, $context = 'display' )
url
 (string) The URL to be cleaned.
protocols
 (array) Optional. An array of acceptable protocols.
Default: null
context
 (string) Optional. How the URL will be used. Default is 'display'.
Default: 'display'

Return

(string) The cleaned $url after the 'clean_url' filter is applied.

Source

function clean_url( $url, $protocols = null, $context = 'display' ) {
	if ( $context == 'db' )
		_deprecated_function( 'clean_url( $context = \'db\' )', '3.0', 'esc_url_raw()' );
	else
		_deprecated_function( __FUNCTION__, '3.0', 'esc_url()' );
	return esc_url( $url, $protocols, $context );
}
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