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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 |
|---|---|
| 215 | } |
| 216 | |
| 217 | // If home is not set use siteurl. |
| 218 | if ( 'home' == $setting && '' == $value ) |
| 219 | return get_option('siteurl'); |
| 220 | |
| 221 | if ( in_array($setting, array('siteurl', 'home', 'category_base', 'tag_base')) ) |
| 222 | $value = untrailingslashit($value); |
| 223 | |
| 224 | return apply_filters( 'option_' . $setting, maybe_unserialize($value) ); |
| 225 | } |
| 226 | |
| 227 | function wp_protect_special_option($option) { |
| 228 | $protected = array('alloptions', 'notoptions'); |
| 229 | if ( in_array($option, $protected) ) |
| 230 | die(sprintf(__('%s is a protected WP option and may not be modified'), wp_specialchars($option))); |
| 231 | } |
| 232 | |
| 233 | function form_option($option) { |