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PHP error() function (with example)

Hey everyone,

I'm currently working on a PHP project and I came across the error() function, which I'm not quite familiar with. I've looked through the PHP documentation, but I'm still a bit confused. Could someone please explain to me what the error() function does and maybe provide an example of how it can be used?

Any help would be greatly appreciated!

Thanks in advance.

All Replies


Hey there,

I've used the error() function in PHP before, so I can help shed some light on it. The error() function is actually not a built-in function in PHP. It seems like there may have been a typo in the original question, as PHP does not have a predefined error() function.

In PHP, however, we do have the error_reporting() function, which allows you to set the level of error reporting for your scripts. By manipulating this function, you can control how PHP handles errors and displays error messages.

For example, let's say you want to turn off all error reporting in your PHP script. You can use the following code:


This will suppress all error messages from being displayed. This can be useful when you have a production environment and don't want to expose any potential vulnerabilities or sensitive information to the end users.

On the other hand, if you want to display all errors, including notices, warnings, and fatal errors, you can use the following code:


This will ensure that all errors are reported and displayed, which can be helpful during the development and debugging phase of your project.

I hope this clarifies things for you! Let me know if you have any more questions.



I've stumbled upon this thread and I noticed something interesting. Although the original question mentioned the error() function, it seems like there was a confusion there. As my previous friend mentioned, PHP doesn't have a built-in error() function.

However, in PHP, we have a function called trigger_error(). This function allows you to generate a user-level error or a custom error message. It's quite handy if you want to handle errors in a more customized way.

To use trigger_error(), you'll need to provide it with two main arguments: the error message itself and the error level. The error level determines the severity of the error you want to trigger. Some commonly used error levels are E_USER_ERROR, E_USER_WARNING, and E_USER_NOTICE.

Here's an example to give you a better idea:

$number = 5;

if ($number > 10) {
// Trigger a user-level error if the condition is not met
trigger_error("The number must be greater than 10!", E_USER_ERROR);

In this example, if the value of `$number` is less than or equal to 10, a user-level error will be triggered and the specified error message will be displayed.

Using trigger_error() can be particularly useful when you want to handle specific conditions or situations in your code and provide your own error messaging to users or developers.

I hope this clears things up! Feel free to ask if you have any further questions or need more examples.

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