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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
2925 | /** |
2926 | * Filter a string cleaned and escaped for output as a URL. |
2927 | * |
2928 | * @since 2.3.0 |
2929 | * |
2930 | * @param string $good_protocol_url The cleaned URL to be returned. |
2931 | * @param string $original_url The URL prior to cleaning. |
2932 | * @param string $_context If 'display', replace ampersands and single quotes only. |
2933 | */ |
2934 | return apply_filters( 'clean_url', $good_protocol_url, $original_url, $_context ); |
2935 | } |
2936 |
|
2937 | /** |
2938 | * Performs esc_url() for database usage. |
2939 | * |
2940 | * @since 2.8.0 |
2941 | * @uses esc_url() |
2942 | * |
2943 | * @param string $url The URL to be cleaned. |