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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 |
|---|---|
| 1053 | } |
| 1054 | |
| 1055 | function wp_admin_css_uri( $file = 'wp-admin' ) { |
| 1056 | if ( defined('WP_INSTALLING') ) |
| 1057 | { |
| 1058 | $_file = add_query_arg( 'version', get_bloginfo( 'version' ), "./$file.css" ); |
| 1059 | } else { |
| 1060 | $_file = add_query_arg( 'version', get_bloginfo( 'version' ), get_option( 'siteurl' ) . "/wp-admin/$file.css" ); |
| 1061 | } |
| 1062 | return apply_filters( 'wp_admin_css_uri', $_file, $file ); |
| 1063 | } |
| 1064 | |
| 1065 | function wp_admin_css( $file = 'wp-admin' ) { |
| 1066 | echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . wp_admin_css_uri( $file ) . "' type='text/css' />\n", $file ); |
| 1067 | if ( 'rtl' == get_bloginfo( 'text_direction' ) ) { |
| 1068 | $rtl = ( 'wp-admin' == $file ) ? 'rtl' : "$file-rtl"; |
| 1069 | echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . wp_admin_css_uri( $rtl ) . "' type='text/css' />\n", $rtl ); |
| 1070 | } |
| 1071 | } |