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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 |
|---|---|
| 6296 | |
| 6297 | if ( ! did_action( 'wp_loaded' ) ) { |
| 6298 | /** |
| 6299 | * Filters the list of protocols allowed in HTML attributes. |
| 6300 | * |
| 6301 | * @since 3.0.0 |
| 6302 | * |
| 6303 | * @param string[] $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
| 6304 | */ |
| 6305 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
| 6306 | } |
| 6307 | |
| 6308 | return $protocols; |
| 6309 | } |
| 6310 | |
| 6311 | /** |
| 6312 | * Return a comma-separated string of functions that have been called to get |
| 6313 | * to the current point in code. |
| 6314 | * |