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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 |
---|---|
6387 |
|
6388 | if ( ! did_action( 'wp_loaded' ) ) { |
6389 | /** |
6390 | * Filters the list of protocols allowed in HTML attributes. |
6391 | * |
6392 | * @since 3.0.0 |
6393 | * |
6394 | * @param string[] $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
6395 | */ |
6396 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
6397 | } |
6398 |
|
6399 | return $protocols; |
6400 | } |
6401 |
|
6402 | /** |
6403 | * Return a comma-separated string of functions that have been called to get |
6404 | * to the current point in code. |
6405 | * |