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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 |
|---|---|
| 6389 | |
| 6390 | if ( ! did_action( 'wp_loaded' ) ) { |
| 6391 | /** |
| 6392 | * Filters the list of protocols allowed in HTML attributes. |
| 6393 | * |
| 6394 | * @since 3.0.0 |
| 6395 | * |
| 6396 | * @param string[] $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
| 6397 | */ |
| 6398 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
| 6399 | } |
| 6400 | |
| 6401 | return $protocols; |
| 6402 | } |
| 6403 | |
| 6404 | /** |
| 6405 | * Return a comma-separated string of functions that have been called to get |
| 6406 | * to the current point in code. |
| 6407 | * |