PHP - Function user_error()


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

Definition and Usage

This function is alias of trigger_error() and 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()).


Sr.No Parameter & Description


It specifies the error message. Limited to 1024 characters in length.



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 function returns FALSE if wrong error_type is specified, TRUE otherwise.


Following is the usage of this function −

    if ($test<10) {
    user_error("Number cannot be less than 10");

This will produce the following result −

Number cannot be less than 10
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