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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 |
---|---|
5109 | $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) ); |
5110 |
|
5111 | /** |
5112 | * Filter the list of icon directory URIs. |
5113 | * |
5114 | * @since 2.5.0 |
5115 | * |
5116 | * @param array $uris List of icon directory URIs. |
5117 | */ |
5118 | $dirs = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) ); |
5119 | $icon_files = array(); |
5120 | while ( $dirs ) { |
5121 | $keys = array_keys( $dirs ); |
5122 | $dir = array_shift( $keys ); |
5123 | $uri = array_shift($dirs); |
5124 | if ( $dh = opendir($dir) ) { |
5125 | while ( false !== $file = readdir($dh) ) { |
5126 | $file = basename($file); |
5127 | if ( substr($file, 0, 1) == '.' ) |