PHP | trigger_error() Function

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] );


Parameter Details

Sr.NoParameter & 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


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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