PHP | trigger_error() Function

Hello dear readers! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be discussing about the PHP trigger_error() Function.

The built-in PHP trigger_error() function is used to trigger a user error condition, it can be used by in conjunction with the built-in error handler, or with a user defined function that has been set as the new error handler (set_error_handler).

Syntax

Following below is the syntax to use this function -

bool trigger_error ( string $error_msg [, int $error_type] );

READ: PHP | set_error_handler() Function

Parameter Details

Sr.No	Parameter & Description
1	error_msg(Required) .It specifies the error message. Limited to 1024 characters in length.
2	error_types(Optional) It specifies the error type for this error message. Possible error types − E_USER_ERROR − Fatal user-generated run-time error. Errors that can not be recovered from. Execution of the script is halted. E_USER_WARNING − Non-fatal user-generated run-time warning. Execution of the script is not halted. E_USER_NOTICE − Default. User-generated run-time notice. The script found something that might be an error, but could also happen when running a script normally.

Return Value

This PHP function returns FALSE if wrong error_type is specified, true otherwise.

Example

Try out the below example -

<?php
 if ($test<15) {
    trigger_error("Number cannot be less than 15");
}
?> 

Output

When the above code is executed, it will produce the following result -

Number cannot be less than 15

READ: PHP | set_exception_handler() Function

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the PHP user_error() Function

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