nikic/php-parser
Parse PHP code into an Abstract Syntax Tree (AST) for static analysis, manipulation, and code generation. Supports PHP 5.x to 8.4, handles errors gracefully, and preserves formatting during AST-to-code conversion. Easily traverse, modify, and convert ASTs back to PHP, with JSON serialization support...
This package enables critical static code analysis and manipulation capabilities for any PHP-centric product. Key decisions it supports include: building custom code linters/security scanners that detect vulnerabilities by traversing ASTs; creating automated refactoring tools that preserve formatting while transforming code (e.g., PHP version upgrades); developing IDE plugins requiring deep code understanding; and implementing code generation systems for scaffolding or template-based development. It eliminates the need to build a PHP parser from scratch—leveraging a battle-tested solution with 17k+ stars and integration in major projects like PHPStan and Psalm—while supporting all modern PHP versions (5.2 to 8.4) for future-proof roadmap planning.
Adopt this package when your product requires programmatic analysis, transformation, or generation of PHP code—especially for use cases involving AST manipulation, name resolution, or formatting-preserving code rewriting. It’s ideal when you need robust error recovery for invalid code, constant expression evaluation, or cross-version PHP compatibility. Avoid it if your project doesn’t involve PHP code (e.g., JavaScript/Python tools), if you only need basic tokenization (a simpler lexer suffices), or if your environment prohibits Composer dependencies. It’s also unnecessary for simple string-based code processing where AST-level precision isn’t required.
Executives: "This industry-standard package powers critical code analysis for top PHP projects like PHPStan and Psalm. By integrating it, we can rapidly build advanced features—like automated security scanning, smart refactoring tools, and version-upgrade assistants—without reinventing the wheel. It reduces development risk, accelerates time-to-market for code intelligence capabilities, and leverages a proven 17k+ star solution trusted by the entire PHP ecosystem."
Engineering: "We get a mature, well-documented AST parser with full PHP 5.2–8.4 support, error recovery, formatting preservation, and name resolution out of the box. The clean API and comprehensive docs (including AST builders and traverser patterns) let us focus on product logic—not parsing edge cases. Active maintenance with regular releases ensures compatibility with our PHP versions and future language features."
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