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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 |
---|---|
3459 | $function = apply_filters( 'wp_die_xml_handler', '_xml_wp_die_handler' ); |
3460 | } else { |
3461 | /** |
3462 | * Filters the callback for killing WordPress execution for all non-Ajax, non-JSON, non-XML requests. |
3463 | * |
3464 | * @since 3.0.0 |
3465 | * |
3466 | * @param callable $function Callback function name. |
3467 | */ |
3468 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
3469 | } |
3470 |
|
3471 | call_user_func( $function, $message, $title, $args ); |
3472 | } |
3473 |
|
3474 | /** |
3475 | * Kills WordPress execution and displays HTML page with an error message. |
3476 | * |
3477 | * This is the default handler for wp_die(). If you want a custom one, |