Function resolvePhpIncludePath

src/resolution/import-resolver.ts:741–756

* Resolve a PHP include/require path to a project-relative file path. * * PHP resolves includes relative to the including file's directory (the * common case for procedural codebases); php.ini `include_path` is not * modeled. Callers pass an already-extracted static literal path.

(
  includePath: string,
  fromFile: string,
  context: ResolutionContext
)

 * modeled. Callers pass an already-extracted static literal path.
 */
function resolvePhpIncludePath(
  includePath: string,
  fromFile: string,
  context: ResolutionContext
): string | null {
  const projectRoot = context.getProjectRoot();
  const fromDir = path.dirname(path.join(projectRoot, fromFile));
  const basePath = path.resolve(fromDir, includePath);
  const relativePath = path.relative(projectRoot, basePath).replace(/\\/g, '/');
  if (context.fileExists(relativePath)) return relativePath;
  // The literal may omit the .php extension (e.g. include "config").
  for (const ext of EXTENSION_RESOLUTION.php ?? []) {
    if (context.fileExists(relativePath + ext)) return relativePath + ext;
  }
  return null;
}

/**
 * Extract import mappings from a file