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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 |
---|---|
5093 |
|
5094 | if ( ! did_action( 'wp_loaded' ) ) { |
5095 | /** |
5096 | * Filters the list of protocols allowed in HTML attributes. |
5097 | * |
5098 | * @since 3.0.0 |
5099 | * |
5100 | * @param array $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
5101 | */ |
5102 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
5103 | } |
5104 |
|
5105 | return $protocols; |
5106 | } |
5107 |
|
5108 | /** |
5109 | * Return a comma-separated string of functions that have been called to get |
5110 | * to the current point in code. |
5111 | * |