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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 |
---|---|
128 | * @since 2.1.0 |
129 | */ |
130 | do_action( "admin_head-$hook_suffix" ); |
131 |
|
132 | /** |
133 | * Fires in head section for all admin pages. |
134 | * |
135 | * @since 2.1.0 |
136 | */ |
137 | do_action( 'admin_head' ); |
138 |
|
139 | if ( get_user_setting('mfold') == 'f' ) |
140 | $admin_body_class .= ' folded'; |
141 |
|
142 | if ( !get_user_setting('unfold') ) |
143 | $admin_body_class .= ' auto-fold'; |
144 |
|
145 | if ( is_admin_bar_showing() ) |
146 | $admin_body_class .= ' admin-bar'; |