Fires once all must-use and network-activated plugins have loaded. Parameters . ( 2.8.0 ) . . Hook name: muplugins_loaded Hook type: action Plugin ref: WordPress Sourcefile: File ref: wp-settings.php Description: Fires once all must-use and network-activated plugins have loaded. Parameters: Deprecated?: No API Letters: L,M Invokers 1 to 1 of 1 wp-settings.php Implementers