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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 |
|---|---|
| 7135 | |
| 7136 | if ( ! did_action( 'wp_loaded' ) ) { |
| 7137 | /** |
| 7138 | * Filters the list of protocols allowed in HTML attributes. |
| 7139 | * |
| 7140 | * @since 3.0.0 |
| 7141 | * |
| 7142 | * @param string[] $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. |
| 7143 | */ |
| 7144 | $protocols = array_unique( (array) apply_filters( 'kses_allowed_protocols', $protocols ) ); |
| 7145 | } |
| 7146 | |
| 7147 | return $protocols; |
| 7148 | } |
| 7149 | |
| 7150 | /** |
| 7151 | * Returns a comma-separated string or array of functions that have been called to get |
| 7152 | * to the current point in code. |
| 7153 | * |