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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.
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2002 | * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes. |
2003 | * @return string Admin url link with optional path appended. |
2004 | */ |
2005 | function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) { |
2006 | $url = get_site_url($blog_id, 'wp-admin/', $scheme); |
2007 |
|
2008 | if ( !empty( $path ) && is_string( $path ) && strpos( $path, '..' ) === false ) |
2009 | $url .= ltrim( $path, '/' ); |
2010 |
|
2011 | return apply_filters( 'admin_url', $url, $path, $blog_id ); |
2012 | } |
2013 |
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2014 | /** |
2015 | * Retrieve the url to the includes directory. |
2016 | * |
2017 | * @package WordPress |
2018 | * @since 2.6.0 |
2019 | * |
2020 | * @param string $path Optional. Path relative to the includes url. |