WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
---|---|
3891 | * Filter extra file headers by context. |
3892 | * |
3893 | * The dynamic portion of the hook name, $context, refers to the context |
3894 | * where extra headers might be loaded. |
3895 | * |
3896 | * @since 2.9.0 |
3897 | * |
3898 | * @param array $extra_context_headers Empty array by default. |
3899 | */ |
3900 | if ( $context && $extra_headers = apply_filters( "extra_{$context}_headers", array() ) ) { |
3901 | $extra_headers = array_combine( $extra_headers, $extra_headers ); // keys equal values |
3902 | $all_headers = array_merge( $extra_headers, (array) $default_headers ); |
3903 | } else { |
3904 | $all_headers = $default_headers; |
3905 | } |
3906 |
|
3907 | foreach ( $all_headers as $field => $regex ) { |
3908 | if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, $match ) && $match[1] ) |
3909 | $all_headers[ $field ] = _cleanup_header_comment( $match[1] ); |