自定义PHP错误消息

Question

I want to change the following PHP error message so that user does not see this error and I would like to display an error which is more understandable by the user.

For example consider this error which I want to edit,

Notice: Undefined index: user_input on line 33

I want to display the following error message instead of the above default error message,

Process failed

How can I implement this on my website?

Answer 1

This is not an error it is a notice, so you will need to do few things:

1. First look into ErrorException you need to convert the notice to an exception.
2. Catch the exception
3. Print your custom error message

Example:

<?php
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
    throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
set_error_handler("exception_error_handler");


try {
    //Trigger exception:
    $my_array = array();
    echo $my_array['undefined'];//Notice will throw exception

} catch (Exception $e) {
    echo 'Process failed';
}
?>