Introduction to php user_error() function

user_error() function creates a user-defined error message.

The user_error() function is used to trigger an error message under user-specified conditions. It can be used with the built-in error handler routine, or with a user custom function set by the set_error_handler() function.

This function is useful when you need to customize the error message under a specified condition when running the script.

If an illegal error type is specified, this function returns FALSE, otherwise it returns TRUE.

This function is an alias of the trigger_error() function.

Syntax

user_error(error_message,error_types)

Parameters	Description
error_message	Required. Specifies the error message. Length limit is 1024 characters.
error_types	Optional. Specifies the error type of the error message. Possible error types: E_USER_ERROR - User-generated fatal error at runtime. Unrecoverable error. Stop executing the script. E_USER_WARNING - User-generated non-fatal warning at runtime. The script did not stop executing. E_USER_NOTICE - Default. User-generated runtime notifications. Script discovery can be a bug, but can also occur when the script is running normally.

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