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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 |
---|---|
3348 | /** |
3349 | * Fires when the given function is being used incorrectly. |
3350 | * |
3351 | * @since 3.1.0 |
3352 | * |
3353 | * @param string $function The function that was called. |
3354 | * @param string $message A message explaining what has been done incorrectly. |
3355 | * @param string $version The version of WordPress where the message was added. |
3356 | */ |
3357 | do_action( 'doing_it_wrong_run', $function, $message, $version ); |
3358 |
|
3359 | /** |
3360 | * Filter whether to trigger an error for _doing_it_wrong() calls. |
3361 | * |
3362 | * @since 3.1.0 |
3363 | * |
3364 | * @param bool $trigger Whether to trigger the error for _doing_it_wrong() calls. Default true. |
3365 | */ |
3366 | if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) { |