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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 |
|---|---|
| 263 | |
| 264 | foreach ( $options as $option ) { |
| 265 | // "When trying to design a foolproof system, |
| 266 | // never underestimate the ingenuity of the fools :)" -- Dougal |
| 267 | if ( in_array( $option->option_name, array( 'siteurl', 'home', 'category_base' ) ) ) |
| 268 | $option->option_value = untrailingslashit( $option->option_value ); |
| 269 | $value = maybe_unserialize( $option->option_value ); |
| 270 | $all_options->{$option->option_name} = apply_filters( 'pre_option_' . $option->option_name, $value ); |
| 271 | } |
| 272 | return apply_filters( 'all_options', $all_options ); |
| 273 | } |
| 274 | |
| 275 | |
| 276 | function wp_load_alloptions() { |
| 277 | global $wpdb; |
| 278 | |
| 279 | $alloptions = wp_cache_get( 'alloptions', 'options' ); |
| 280 | |
| 281 | if ( !$alloptions ) { |