PHP Version Compatibility Checker

Check your PHP code compatibility across all major versions from 7.0 to 8.3. Our advanced analyzer detects deprecated functions, breaking changes, new syntax compatibility, and provides detailed migration recommendations. Perfect for developers planning PHP upgrades, maintaining legacy applications, or ensuring cross-version compatibility.
PHP 7.0-8.3 Support Deprecated Functions Breaking Changes Migration Tips
Quick Examples
DEPRECATED: mysql_connect() removed in PHP 7.0
NEW: match expression (PHP 8.0+)
BREAKING: count() parameter changes
PHP Code Input
Analysis Settings
Compatibility Analysis

Paste your PHP code and click "Analyze Code" to check compatibility

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What PHP compatibility features does this analyzer offer?
The tool checks deprecated functions, breaking changes, syntax compatibility across PHP versions 7.0-8.3, provides migration suggestions, compatibility scoring, and comprehensive reports. Perfect for planning PHP upgrades and maintaining cross-version compatibility.
How do I check my PHP code compatibility?
Simply paste your PHP code into the editor, select your target PHP version, choose analysis options (deprecated functions, breaking changes, suggestions), and click "Analyze Code". The tool will show compatibility issues, migration tips, and version matrix.
Which PHP versions are supported for compatibility checking?
The tool supports compatibility analysis for PHP versions 7.0 through 8.3, including all major and minor releases. You can check compatibility against any target version and see a complete compatibility matrix across all versions.
How accurate is the PHP compatibility analysis?
The tool checks against a comprehensive database of deprecated functions, breaking changes, and syntax modifications from official PHP documentation. While highly accurate for most cases, complex dynamic code may require manual review. Always test in target environments.
Can I export the compatibility analysis results?
Yes! Export options include detailed JSON reports with full analysis data, CSV summaries for spreadsheet analysis, and copyable text reports. Perfect for documentation, team sharing, or integration with development workflows.

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