Mautic and PHP 8.3 Compatibility Guide (2026)

If you are planning to run Mautic on PHP 8.3, you are already moving in the right direction. Modern servers like Ubuntu 24 come with PHP 8.3 by default, and performance improvements are significant.

However, many developers face confusion because not all Mautic versions support PHP 8.3, and upgrading without proper understanding can break your system.

In this guide, I will explain everything step by step in a simple and practical way:

• Which Mautic version supports PHP 8.3
• What issues you may face
• How to install Mautic on PHP 8.3
• How to upgrade safely from older versions
• Real-world production recommendations

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Understanding Mautic and PHP Compatibility

Mautic is built on Symfony and depends heavily on PHP version compatibility. Every major Mautic release aligns with specific PHP versions.

Supported Versions Table

Mautic Version	PHP 7.x	PHP 8.0	PHP 8.1	PHP 8.2	PHP 8.3
Mautic 4.x	Yes	Yes	Partial	No	No
Mautic 5.0–5.1	No	Yes	Yes	Yes	Partial
Mautic 5.2+	No	Yes	Yes	Yes	Yes
Mautic 6.x	No	No	Yes	Yes	Yes
Mautic 7.x	No	No	Yes	Yes	Yes

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Final Conclusion (Important)

If you are using PHP 8.3:

• You must use Mautic 5.2 or higher
• Best recommended: Mautic 6.x or 7.x

Avoid:

• Mautic 4.x (will break completely)
• Mautic 5.0/5.1 (unstable with PHP 8.3)

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Why PHP 8.3 Matters for Mautic

PHP 8.3 provides:

• Better performance for cron jobs and campaigns
• Faster email processing
• Improved memory handling
• Stronger type safety

For a marketing automation tool like Mautic, this directly improves:

• Campaign execution speed
• Segment updates
• Email queue processing

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Common Issues When Using PHP 8.3 with Mautic

From real-world experience, these are the most common problems:

1. Composer Dependency Errors

Older Mautic versions will fail during installation:

Your requirements could not be resolved to an installable set of packages

2. Deprecated Function Errors

PHP 8.3 removes or changes older behaviors:

Deprecated: Creation of dynamic property is deprecated

3. Plugin Compatibility Issues

Third-party plugins may break:

• Email builders
• CRM integrations
• Custom themes

4. Symfony Version Conflict

Mautic internally uses Symfony. Old versions do not support PHP 8.3.

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Step-by-Step: Install Mautic on PHP 8.3 (Production Setup)

Step 1: Server Requirements

Make sure your server has:

• PHP 8.3
• MySQL 8.0
• Apache or Nginx
• Composer

Install required PHP extensions:

sudo apt install php8.3 php8.3-cli php8.3-mysql php8.3-xml php8.3-mbstring php8.3-curl php8.3-zip php8.3-intl php8.3-bcmath

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Step 2: Download Mautic

cd /var/www
git clone https://github.com/mautic/mautic.git
cd mautic

Checkout stable version:

git checkout 5.2

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Step 3: Install Dependencies

composer install --no-dev

If memory error occurs:

COMPOSER_MEMORY_LIMIT=-1 composer install

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Step 4: Set Permissions

sudo chown -R www-data:www-data /var/www/mautic
sudo chmod -R 775 /var/www/mautic

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Step 5: Configure Apache

Example Virtual Host:

<VirtualHost *:80>
    ServerName mautic.yourdomain.com
    DocumentRoot /var/www/mautic/docroot

    <Directory /var/www/mautic/docroot>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

Enable rewrite:

a2enmod rewrite
systemctl restart apache2

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Step 6: Setup Database

mysql -u root -p
CREATE DATABASE mautic;

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Step 7: Run Installation

Open browser:

http://yourdomain.com

Complete setup wizard.

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Cron Jobs Setup (Very Important)

Mautic depends heavily on cron jobs.

Add these:

* * * * * php /var/www/mautic/bin/console mautic:segments:update
* * * * * php /var/www/mautic/bin/console mautic:campaigns:update
* * * * * php /var/www/mautic/bin/console mautic:campaigns:trigger

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Upgrading from Mautic 4 to PHP 8.3 (Safe Strategy)

This is where most developers make mistakes.

Wrong Approach

Direct upgrade:

• PHP 7.4 → PHP 8.3
• Mautic 4 → Mautic 5

This breaks everything.

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Correct Upgrade Path

Follow this sequence:

1. Upgrade Mautic 4 → Mautic 5 (on PHP 8.1)
2. Test everything
3. Upgrade PHP to 8.2
4. Upgrade Mautic to 5.2+
5. Finally move to PHP 8.3

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Real Production Advice (Important)

Based on your experience (multi-server + Laravel + microservices):

Recommended Setup

• Production:
  • PHP 8.3
  • Mautic 6.x
• Staging:
  • Same version for testing
• Local:
  • PHP 8.2 (if XAMPP limitation)

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Performance Optimization Tips

1. Use PHP-FPM (not mod_php)

Improves concurrency and speed.

2. Enable OPCache

opcache.enable=1
opcache.memory_consumption=256

3. Queue Emails Properly

php bin/console mautic:emails:send

4. Use Redis (optional)

For sessions and cache.

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Troubleshooting Guide

Issue: Blank Page

Check logs:

tail -f var/logs/prod.log

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Issue: 500 Error

Check:

• Permissions
• Apache config
• PHP extensions

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Issue: Cron Not Working

Test manually:

php bin/console mautic:segments:update

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Issue: Composer Fails

Update composer:

composer self-update

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SEO Keywords You Can Target

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Final Thoughts

Running Mautic on PHP 8.3 is not just possible, it is the recommended modern setup.

But success depends on:

• Choosing the right Mautic version
• Following a safe upgrade path
• Testing plugins carefully

If done correctly, you will get:

• Better performance
• Stable campaigns
• Faster automation

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