Free tools to check PHP versions and test code compatibility across versions 7.4 to 8.5
Free, open-source testing and monitoring for MCP servers
Stage
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Founded
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Based in
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IN
Pricing model
Free
Freemium
Pricing
Not given
Free: browser test, CLI tool, GitHub check, and Monitor for 1 server with hourly checks and daily full tests. Pro: $19/month founding price (first 50 customers, then $29/month) for 3 servers, hourly full tests, 5-minute uptime checks, Slack alerts, and login support. Agency: $99/month (increases to
Key features
PHP Version Checker to detect website PHP versions via headers and markers
Multi-version code compatibility checker testing 7.4 to 8.5
PHP Sandbox running code in your browser with real PHP interpreters
PHP Syntax Checker identifying parse errors and deprecated functions
PHP EOL Dates calendar with support status for all versions
Bcrypt Generator for password hashing
phpinfo() Analyzer explaining server configuration
PHP Date Format tester
PHP Formatter for code formatting
PHP Regex Tester for preg_match patterns
Supports servers behind login and local servers
Generates shareable HTML reports
Email and Slack alerting for server changes
What makes it different
All code runs in your browser on WebAssembly, never uploaded to servers
Completely free with no sign-up required
Website checker works on any device including school machines without software installation
Checks are code-verified, never AI-judged, with plain evidence for each result
Completely free testing with no account required
Never modifies or deletes data; safe mode by default
No tracking, telemetry, or data sent beyond the tested server