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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 |
---|---|
1848 | if ( !empty($plugin) && is_string($plugin) ) { |
1849 | $folder = dirname(plugin_basename($plugin)); |
1850 | if ('.' != $folder) |
1851 | $url .= '/' . ltrim($folder, '/'); |
1852 | } |
1853 |
|
1854 | if ( !empty($path) && is_string($path) && strpos($path, '..') === false ) |
1855 | $url .= '/' . ltrim($path, '/'); |
1856 |
|
1857 | return apply_filters('plugins_url', $url, $path, $plugin); |
1858 | } |
1859 |
|
1860 | /** |
1861 | * Output rel=canonical for singular queries |
1862 | * |
1863 | * @package WordPress |
1864 | * @since 2.9.0 |
1865 | */ |
1866 | function rel_canonical() { |