src/Fixer/ClassNotation/NoPhp4ConstructorFixer.php
private function fixConstructor(Tokens $tokens, $className, $classStart, $classEnd)
    {
        $php4 = $this->findFunction($tokens, $className, $classStart, $classEnd);

        if (null === $php4) {
            // no PHP4-constructor!
            return;
        }

        if (!empty($php4['modifiers'][T_ABSTRACT]) || !empty($php4['modifiers'][T_STATIC])) {
            // PHP4 constructor can't be abstract or static
            return;
        }

        $php5 = $this->findFunction($tokens, '__construct', $classStart, $classEnd);

        if (null === $php5) {
            // no PHP5-constructor, we can rename the old one to __construct
            $tokens[$php4['nameIndex']] = new Token([T_STRING, '__construct']);

            // in some (rare) cases we might have just created an infinite recursion issue
            $this->fixInfiniteRecursion($tokens, $php4['bodyIndex'], $php4['endIndex']);

            return;
        }

        // does the PHP4-constructor only call $this->__construct($args, ...)?
        list($seq, $case) = $this->getWrapperMethodSequence($tokens, '__construct', $php4['startIndex'], $php4['bodyIndex']);
        if (null !== $tokens->findSequence($seq, $php4['bodyIndex'] - 1, $php4['endIndex'], $case)) {
            // good, delete it!
            for ($i = $php4['startIndex']; $i <= $php4['endIndex']; ++$i) {
                $tokens->clearAt($i);
            }

            return;
        }

        // does __construct only call the PHP4-constructor (with the same args)?
        list($seq, $case) = $this->getWrapperMethodSequence($tokens, $className, $php4['startIndex'], $php4['bodyIndex']);
        if (null !== $tokens->findSequence($seq, $php5['bodyIndex'] - 1, $php5['endIndex'], $case)) {
            // that was a weird choice, but we can safely delete it and...
            for ($i = $php5['startIndex']; $i <= $php5['endIndex']; ++$i) {
                $tokens->clearAt($i);
            }
            // rename the PHP4 one to __construct
            $tokens[$php4['nameIndex']] = new Token([T_STRING, '__construct']);
        }
    }
private function fixConstructor(Tokens $tokens, $className, $classStart, $classEnd)
    {
        $php4 = $this->findFunction($tokens, $className, $classStart, $classEnd);

        if (null === $php4) {
            // no PHP4-constructor!
            return;
        }

        if (!empty($php4['modifiers'][T_ABSTRACT]) || !empty($php4['modifiers'][T_STATIC])) {
            // PHP4 constructor can't be abstract or static
            return;
        }

        $php5 = $this->findFunction($tokens, '__construct', $classStart, $classEnd);

        if (null === $php5) {
            // no PHP5-constructor, we can rename the old one to __construct
            $tokens[$php4['nameIndex']] = new Token([T_STRING, '__construct']);

            // in some (rare) cases we might have just created an infinite recursion issue
            $this->fixInfiniteRecursion($tokens, $php4['bodyIndex'], $php4['endIndex']);

            return;
        }

        // does the PHP4-constructor only call $this->__construct($args, ...)?
        list($seq, $case) = $this->getWrapperMethodSequence($tokens, '__construct', $php4['startIndex'], $php4['bodyIndex']);
        if (null !== $tokens->findSequence($seq, $php4['bodyIndex'] - 1, $php4['endIndex'], $case)) {
            // good, delete it!
            for ($i = $php4['startIndex']; $i <= $php4['endIndex']; ++$i) {
                $tokens->clearAt($i);
            }

            return;
        }

        // does __construct only call the PHP4-constructor (with the same args)?
        list($seq, $case) = $this->getWrapperMethodSequence($tokens, $className, $php4['startIndex'], $php4['bodyIndex']);
        if (null !== $tokens->findSequence($seq, $php5['bodyIndex'] - 1, $php5['endIndex'], $case)) {
            // that was a weird choice, but we can safely delete it and...
            for ($i = $php5['startIndex']; $i <= $php5['endIndex']; ++$i) {
                $tokens->clearAt($i);
            }
            // rename the PHP4 one to __construct
            $tokens[$php4['nameIndex']] = new Token([T_STRING, '__construct']);
        }
    }
Fix constructor within a class, if possible.

@param Tokens $tokens     the Tokens instance
@param string $className  the class name
@param int    $classStart the class start index
@param int    $classEnd   the class end index