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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 |
|---|---|
| 1063 | */ |
| 1064 | function wp_doing_ajax() { |
| 1065 | /** |
| 1066 | * Filters whether the current request is a WordPress Ajax request. |
| 1067 | * |
| 1068 | * @since 4.7.0 |
| 1069 | * |
| 1070 | * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. |
| 1071 | */ |
| 1072 | return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); |
| 1073 | } |
| 1074 | |
| 1075 | /** |
| 1076 | * Determines whether the current request is a WordPress cron request. |
| 1077 | * |
| 1078 | * @since 4.8.0 |
| 1079 | * |
| 1080 | * @return bool True if it's a WordPress cron request, false otherwise. |
| 1081 | */ |