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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 |
---|---|
6923 |
|
6924 | if ( ! did_action( 'wp_loaded' ) ) { |
6925 | /** |
6926 | * Filters the list of protocols allowed in HTML attributes. |
6927 | * |
6928 | * @since 3.0.0 |
6929 | * |
6930 | * @param string[] $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
6931 | */ |
6932 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
6933 | } |
6934 |
|
6935 | return $protocols; |
6936 | } |
6937 |
|
6938 | /** |
6939 | * Returns a comma-separated string or array of functions that have been called to get |
6940 | * to the current point in code. |
6941 | * |