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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 |
|---|---|
| 157 | |
| 158 | // Load network activated plugins. |
| 159 | if ( is_multisite() ) { |
| 160 | foreach( wp_get_active_network_plugins() as $network_plugin ) { |
| 161 | include_once( $network_plugin ); |
| 162 | } |
| 163 | unset( $network_plugin ); |
| 164 | } |
| 165 | |
| 166 | do_action( 'muplugins_loaded' ); |
| 167 | |
| 168 | if ( is_multisite() ) |
| 169 | ms_cookie_constants( ); |
| 170 | |
| 171 | // Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies(). |
| 172 | wp_cookie_constants( ); |
| 173 | |
| 174 | // Define and enforce our SSL constants |
| 175 | wp_ssl_constants( ); |