How do I disable deprecated Joomla messages?

Set Global Configuration → Server → Error Reporting to None on production, turn Debug System off, and set Log Deprecated API to No.

What is the difference between Error Reporting None and Simple?

None hides PHP error display. Simple still shows basic errors and warnings but filters much of the notice and deprecation noise.

Why did Maximum make my PHP 8 site unusable?

Maximum forces very high reporting, so every E_DEPRECATED from legacy extensions can dump onto every page. Switch back to None or Simple.

How do I edit Error Reporting if the administrator will not load?

Edit configuration.php and set public $error_reporting = 'none'; and public $debug = false; then reload.

Should I add error_reporting() to configuration.php?

No. Use the $error_reporting property or the Global Configuration UI. Appending a free-standing call is an outdated and brittle hack.

What does Log Deprecated API do?

It writes Joomla deprecated API usage to deprecated.php in the log folder. Turn it on only while auditing, then turn it off.

Will hiding deprecated messages fix security issues?

No. It only stops display or API logging. Outdated extensions can still be vulnerable. Plan updates or a migration.

Can I filter E_DEPRECATED in php.ini only?

Yes for System Default, and for some compile-time cases. If Joomla Error Reporting is Maximum, change that setting too.

Where do we start if deprecations come from abandoned extensions?

Request a Joomla upgrade audit so the stack moves to current Joomla and PHP with supported replacements.

Joomla

Disable deprecated Joomla messages

Stop deprecated Joomla and PHP messages on Joomla 4, 5, and 6: Error Reporting None or Simple, Debug off, Log Deprecated API, and safe configuration.php DIY when the admin is locked.

Abhilash Sahoo

Sep 22, 20268 min read

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Abhilash Sahoo

Abhilash Sahoo, with over 16 years of experience, is Founder & CEO of Infyways Solutions. He builds web platforms and eCommerce on Joomla, WordPress, Shopify, Magento, and OpenCart, plus modern stacks like Next.js, React, Node.js, and Python, with AI agents, automation, and headless CMS when products need to scale.

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Disable deprecated Joomla messages

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Abhilash Sahoo

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