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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 |
|---|---|
| 221 | } |
| 222 | |
| 223 | // If home is not set use siteurl. |
| 224 | if ( 'home' == $setting && '' == $value ) |
| 225 | return get_option('siteurl'); |
| 226 | |
| 227 | if ( 'siteurl' == $setting || 'home' == $setting || 'category_base' == $setting ) |
| 228 | $value = preg_replace('|/+$|', '', $value); |
| 229 | |
| 230 | return apply_filters( 'option_' . $setting, maybe_unserialize($value) ); |
| 231 | } |
| 232 | |
| 233 | function form_option($option) { |
| 234 | echo attribute_escape(get_option($option)); |
| 235 | } |
| 236 | |
| 237 | function get_alloptions() { |
| 238 | global $wpdb, $wp_queries; |
| 239 | $wpdb->hide_errors(); |