trigger_error

Definition and usage

trigger_error() function creates a user-level error message.

trigger_error() function can be associated with the built-in error handler, or it can use a user-defined function as a new error handler ( set_error_handler() ).

Example

If $usernum is greater than 10, an error is triggered:

 <?php
 if ( $usernum > 10 ) {
     trigger_error ( "Number cannot be larger than 10" ) ;
 }
 ?> 

The output of the above code is similar to this:

 Notice: Number cannot be larger than 10
 in C:\webfolder\test.php on line 6

grammar

 trigger_error ( errormsg , errortype ) ;