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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 |
|---|---|
| 83 | } else { |
| 84 | /** |
| 85 | * Fires non-authenticated AJAX actions for logged-out users. |
| 86 | * |
| 87 | * The dynamic portion of the hook name, $_REQUEST['action'], |
| 88 | * refers to the name of the AJAX action callback being fired. |
| 89 | * |
| 90 | * @since 2.8.0 |
| 91 | */ |
| 92 | do_action( 'wp_ajax_nopriv_' . $_REQUEST['action'] ); |
| 93 | } |
| 94 | // Default status |
| 95 | die( '0' ); |
| 96 | |