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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 |
|---|---|
| 181 | |
| 182 | /** |
| 183 | * Fires non-authenticated Ajax actions for logged-out users. |
| 184 | * |
| 185 | * The dynamic portion of the hook name, `$action`, refers |
| 186 | * to the name of the Ajax action callback being fired. |
| 187 | * |
| 188 | * @since 2.8.0 |
| 189 | */ |
| 190 | do_action( "wp_ajax_nopriv_{$action}" ); |
| 191 | } |
| 192 | // Default status |
| 193 | wp_die( '0' ); |
| 194 | |