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php-parser

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php-parser

Parse PHP code and returns its AST

  • 2.0.2
  • Source
  • npm
  • Socket score

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What is php-parser?

The php-parser npm package is a JavaScript library that allows you to parse PHP code into an Abstract Syntax Tree (AST). This can be useful for various tasks such as static analysis, code transformation, and code generation.

What are php-parser's main functionalities?

Parsing PHP Code

This feature allows you to parse PHP code into an Abstract Syntax Tree (AST). The code sample demonstrates how to parse a simple PHP script and output the resulting AST.

const parser = require('php-parser');
const phpParser = new parser({ parser: { extractDoc: true } });
const ast = phpParser.parseCode('<?php echo "Hello, World!"; ?>');
console.log(JSON.stringify(ast, null, 2));

Traversing the AST

This feature allows you to traverse the AST to find specific nodes. The code sample demonstrates how to traverse the AST to find and log echo statements.

const parser = require('php-parser');
const phpParser = new parser({ parser: { extractDoc: true } });
const ast = phpParser.parseCode('<?php echo "Hello, World!"; ?>');

function traverse(node) {
  if (node.kind === 'echo') {
    console.log('Found an echo statement');
  }
  for (let key in node) {
    if (node[key] && typeof node[key] === 'object') {
      traverse(node[key]);
    }
  }
}

traverse(ast);

Modifying the AST

This feature allows you to modify the AST. The code sample demonstrates how to change the output of an echo statement from 'Hello, World!' to 'Hello, Universe!'.

const parser = require('php-parser');
const phpParser = new parser({ parser: { extractDoc: true } });
let ast = phpParser.parseCode('<?php echo "Hello, World!"; ?>');

function modifyEcho(node) {
  if (node.kind === 'echo') {
    node.arguments[0].value = 'Hello, Universe!';
  }
  for (let key in node) {
    if (node[key] && typeof node[key] === 'object') {
      modifyEcho(node[key]);
    }
  }
}

modifyEcho(ast);
console.log(JSON.stringify(ast, null, 2));

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Package last updated on 08 Mar 2017

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