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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 |
---|---|
133 | * @since 2.1.0 |
134 | */ |
135 | do_action( "admin_head-{$hook_suffix}" ); |
136 |
|
137 | /** |
138 | * Fires in head section for all admin pages. |
139 | * |
140 | * @since 2.1.0 |
141 | */ |
142 | do_action( 'admin_head' ); |
143 |
|
144 | if ( get_user_setting('mfold') == 'f' ) |
145 | $admin_body_class .= ' folded'; |
146 |
|
147 | if ( !get_user_setting('unfold') ) |
148 | $admin_body_class .= ' auto-fold'; |
149 |
|
150 | if ( is_admin_bar_showing() ) |
151 | $admin_body_class .= ' admin-bar'; |