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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 |
|---|---|
| 271 | uksort($menu, "strnatcasecmp"); // make it all pretty |
| 272 | |
| 273 | if ( apply_filters('custom_menu_order', false) ) { |
| 274 | $menu_order = array(); |
| 275 | foreach ( $menu as $menu_item ) { |
| 276 | $menu_order[] = $menu_item[2]; |
| 277 | } |
| 278 | unset($menu_item); |
| 279 | $default_menu_order = $menu_order; |
| 280 | $menu_order = apply_filters('menu_order', $menu_order); |
| 281 | $menu_order = array_flip($menu_order); |
| 282 | $default_menu_order = array_flip($default_menu_order); |
| 283 | |
| 284 | function sort_menu($a, $b) { |
| 285 | global $menu_order, $default_menu_order; |
| 286 | $a = $a[2]; |
| 287 | $b = $b[2]; |
| 288 | if ( isset($menu_order[$a]) && !isset($menu_order[$b]) ) { |
| 289 | return -1; |