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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 |
|---|---|
| 1964 | * |
| 1965 | * @since 2.0.4 |
| 1966 | * |
| 1967 | * @param string $message Error message. |
| 1968 | * @param string $title Error title. |
| 1969 | * @param string|array $args Optional arguments to control behavior. |
| 1970 | */ |
| 1971 | function wp_die( $message = '', $title = '', $args = array() ) { |
| 1972 | if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) |
| 1973 | $function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' ); |
| 1974 | elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) |
| 1975 | $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); |
| 1976 | elseif ( defined( 'APP_REQUEST' ) && APP_REQUEST ) |
| 1977 | $function = apply_filters( 'wp_die_app_handler', '_scalar_wp_die_handler' ); |
| 1978 | else |
| 1979 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
| 1980 | |
| 1981 | call_user_func( $function, $message, $title, $args ); |
| 1982 | } |