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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 |
|---|---|
| 1183 | */ |
| 1184 | function wp_doing_ajax() { |
| 1185 | /** |
| 1186 | * Filters whether the current request is a WordPress Ajax request. |
| 1187 | * |
| 1188 | * @since 4.7.0 |
| 1189 | * |
| 1190 | * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. |
| 1191 | */ |
| 1192 | return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); |
| 1193 | } |
| 1194 | |
| 1195 | /** |
| 1196 | * Determines whether the current request should use themes. |
| 1197 | * |
| 1198 | * @since 5.1.0 |
| 1199 | * |
| 1200 | * @return bool True if themes should be used, false otherwise. |
| 1201 | */ |