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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 |
---|---|
1054 | */ |
1055 | function wp_doing_ajax() { |
1056 | /** |
1057 | * Filters whether the current request is a WordPress Ajax request. |
1058 | * |
1059 | * @since 4.7.0 |
1060 | * |
1061 | * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. |
1062 | */ |
1063 | return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); |
1064 | } |
1065 |
|
1066 | /** |
1067 | * Determines whether the current request is a WordPress cron request. |
1068 | * |
1069 | * @since 4.8.0 |
1070 | * |
1071 | * @return bool True if it's a WordPress cron request, false otherwise. |
1072 | */ |