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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 |
---|---|
5117 |
|
5118 | if ( ! did_action( 'wp_loaded' ) ) { |
5119 | /** |
5120 | * Filters the list of protocols allowed in HTML attributes. |
5121 | * |
5122 | * @since 3.0.0 |
5123 | * |
5124 | * @param array $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
5125 | */ |
5126 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
5127 | } |
5128 |
|
5129 | return $protocols; |
5130 | } |
5131 |
|
5132 | /** |
5133 | * Return a comma-separated string of functions that have been called to get |
5134 | * to the current point in code. |
5135 | * |