anonymousFunctionFactory = $anonymousFunctionFactory; $this->regexMatcher = $regexMatcher; } public function provideMinPhpVersion() : int { return PhpVersionFeature::PREG_REPLACE_CALLBACK_E_MODIFIER; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('The /e modifier is no longer supported, use preg_replace_callback instead', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run() { $comment = preg_replace('~\b(\w)(\w+)~e', '"$1".strtolower("$2")', $comment); } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run() { $comment = preg_replace_callback('~\b(\w)(\w+)~', function ($matches) { return($matches[1].strtolower($matches[2])); }, $comment); } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [FuncCall::class]; } /** * @param FuncCall $node */ public function refactor(Node $node) : ?Node { if (!$this->isName($node, 'preg_replace')) { return null; } if ($node->isFirstClassCallable()) { return null; } if (\count($node->getArgs()) < 2) { return null; } $firstArgument = $node->getArgs()[0]; $firstArgumentValue = $firstArgument->value; $patternWithoutEExpr = $this->regexMatcher->resolvePatternExpressionWithoutEIfFound($firstArgumentValue); if (!$patternWithoutEExpr instanceof Expr) { return null; } $secondArgument = $node->getArgs()[1]; $anonymousFunction = $this->createAnonymousFunction($secondArgument); if (!$anonymousFunction instanceof Closure) { return null; } $node->name = new Name('preg_replace_callback'); $firstArgument->value = $patternWithoutEExpr; $secondArgument->value = $anonymousFunction; return $node; } private function createAnonymousFunction(Arg $arg) : ?Closure { return $this->anonymousFunctionFactory->createAnonymousFunctionFromExpr($arg->value); } }