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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 |
---|---|
125 | // define the columns to display, the syntax is 'internal name' => 'display name' |
126 | $posts_columns = array( |
127 | 'id' => __('ID'), |
128 | 'date' => __('When'), |
129 | 'title' => __('Title'), |
130 | 'categories' => __('Categories'), |
131 | 'comments' => __('Comments'), |
132 | 'author' => __('Author') |
133 | ); |
134 | $posts_columns = apply_filters('manage_posts_columns', $posts_columns); |
135 |
|
136 | // you can not edit these at the moment |
137 | $posts_columns['control_view'] = ''; |
138 | $posts_columns['control_edit'] = ''; |
139 | $posts_columns['control_delete'] = ''; |
140 |
|
141 | ?> |
142 |
|
143 | <table width="100%" cellpadding="3" cellspacing="3"> |