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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 |
|---|---|
| 46 | function get_template_directory() { |
| 47 | $template = get_template(); |
| 48 | $template_dir = get_theme_root() . "/$template"; |
| 49 | return apply_filters('template_directory', $template_dir, $template); |
| 50 | } |
| 51 | |
| 52 | function get_template_directory_uri() { |
| 53 | $template = get_template(); |
| 54 | $template_dir_uri = get_theme_root_uri() . "/$template"; |
| 55 | return apply_filters('template_directory_uri', $template_dir_uri, $template); |
| 56 | } |
| 57 | |
| 58 | function get_theme_data( $theme_file ) { |
| 59 | $theme_data = implode( '', file( $theme_file ) ); |
| 60 | $theme_data = str_replace ( '\r', '\n', $theme_data ); |
| 61 | preg_match( '|Theme Name:(.*)|i', $theme_data, $theme_name ); |
| 62 | preg_match( '|Theme URI:(.*)|i', $theme_data, $theme_uri ); |
| 63 | preg_match( '|Description:(.*)|i', $theme_data, $description ); |
| 64 | preg_match( '|Author:(.*)|i', $theme_data, $author_name ); |