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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 |
|---|---|
| 36 | require_once( ABSPATH . 'wp-admin/includes/admin.php' ); |
| 37 | |
| 38 | /** Load Ajax Handlers for WordPress Core */ |
| 39 | require_once( ABSPATH . 'wp-admin/includes/ajax-actions.php' ); |
| 40 | |
| 41 | send_nosniff_header(); |
| 42 | nocache_headers(); |
| 43 | |
| 44 | /** This action is documented in wp-admin/admin.php */ |
| 45 | do_action( 'admin_init' ); |
| 46 | |
| 47 | $core_actions_get = array( |
| 48 | 'fetch-list', |
| 49 | 'ajax-tag-search', |
| 50 | 'wp-compression-test', |
| 51 | 'imgedit-preview', |
| 52 | 'oembed-cache', |
| 53 | 'autocomplete-user', |
| 54 | 'dashboard-widgets', |