Let's say you get an old, PHP5, mysql_*, horrible codebase, riddled with security issues and no composer. Your task is to make it work on PHP7+.

• Rector

  112 8,207 9.9 PHP

  Instant Upgrades and Automated Refactoring of any PHP 5.3+ code

  

I'd start with rector: https://github.com/rectorphp/rector

• PHPCompatibility

  19 2,116 9.0 PHP

  PHP Compatibility check for PHP_CodeSniffer

  

also, PHPCompatibility https://github.com/PHPCompatibility/PHPCompatibility is a phpcs ruleset to detect deprecated/removed stuff.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• php7mar

  4 789 0.0 PHP

  Discontinued PHP 7 Migration Assistant Report (MAR)

Run the code base through this https://github.com/Alexia/php7mar

• PHP CS Fixer

  41 12,529 9.8 PHP

  A tool to automatically fix PHP Coding Standards issues

  

once these are done, composer require php codestyle fixer.

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