Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

 class Test1 extends Super
 {
     # err: should NOT change to Super::
-    public function testClass(string $dir = self::SORT_ORDER_ASC)
+    public function testClass(string $dir = \Super::SORT_ORDER_ASC)
     {
         # err: should NOT change to Super::
-        $this->replaceClass(self::SORT_ORDER_ASC);
+        $this->replaceClass(\Super::SORT_ORDER_ASC);
     }
 
     # okay

 class Test2 extends Super
 {
     # err: should change to self::
-    public function testClass(string $dir = 'asc')
+    public function testClass(string $dir = \Super::SORT_ORDER_ASC)
     {
         # err: should change to self::
-        $this->replaceClass('asc');
+        $this->replaceClass(\Super::SORT_ORDER_ASC);
     }
 
     # okay
-    public function testSelf(string $dir = 'asc')
+    public function testSelf(string $dir = self::SORT_ORDER_ASC)
     {
         # okay
-        $this->replaceSelf('asc');
+        $this->replaceSelf(self::SORT_ORDER_ASC);
     }
 
 }

 class Test3 extends Super
 {
     # err: should change to self::
-    public function testClass(string $dir = Super::SORT_ORDER_ASC)
+    public function testClass(string $dir = \Super::SORT_ORDER_ASC)
     {
         # err: should change to self::
-        $this->replaceClass(Super::SORT_ORDER_ASC);
+        $this->replaceClass(\Super::SORT_ORDER_ASC);
     }
     
     # okay
-    public function testSelf(string $dir = Super::SORT_ORDER_ASC)
+    public function testSelf(string $dir = self::SORT_ORDER_ASC)
     {
         # okay
-        $this->replaceSelf(Super::SORT_ORDER_ASC);
+        $this->replaceSelf(self::SORT_ORDER_ASC);
     }
 }

     {
         # okay
         $test = new Test3();
-        $test->replaceClass('asc');
+        $test->replaceClass(\Super::SORT_ORDER_ASC);
     }
 
     public function testSelf(string $dir = 'asc')

     {
         # err: class Test4 has no constant SORT_ORDER_ASC
         $test = new Test3();
-        $test->replaceSelf('asc');
+        $test->replaceSelf(self::SORT_ORDER_ASC);
     }
 }

PHP snippet to change

<?php

class Super
{
    public const SORT_ORDER_ASC = 'ASC';

	public const SORT_ORDER_DESC = 'DESC';
}

class Test1 extends Super
{
    # err: should NOT change to Super::
    public function testClass(string $dir = self::SORT_ORDER_ASC)
    {
        # err: should NOT change to Super::
        $this->replaceClass(self::SORT_ORDER_ASC);
    }

    # okay
    public function testSelf(string $dir = self::SORT_ORDER_ASC)
    {
        # okay
        $this->replaceSelf(self::SORT_ORDER_ASC);
    }

}

class Test2 extends Super
{
    # err: should change to self::
    public function testClass(string $dir = 'asc')
    {
        # err: should change to self::
        $this->replaceClass('asc');
    }

    # okay
    public function testSelf(string $dir = 'asc')
    {
        # okay
        $this->replaceSelf('asc');
    }

}

class Test3 extends Super
{
    # err: should change to self::
    public function testClass(string $dir = Super::SORT_ORDER_ASC)
    {
        # err: should change to self::
        $this->replaceClass(Super::SORT_ORDER_ASC);
    }
    
    # okay
    public function testSelf(string $dir = Super::SORT_ORDER_ASC)
    {
        # okay
        $this->replaceSelf(Super::SORT_ORDER_ASC);
    }
}

class Test4
{
    public function testClass(string $dir = 'asc')
    {
        # okay
        $test = new Test3();
        $test->replaceClass('asc');
    }

    public function testSelf(string $dir = 'asc')
    {
        # err: class Test4 has no constant SORT_ORDER_ASC
        $test = new Test3();
        $test->replaceSelf('asc');
    }
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Arguments\Rector\ClassMethod\ReplaceArgumentDefaultValueRector;
use Rector\Arguments\ValueObject\ReplaceArgumentDefaultValue;

return RectorConfig::configure()
        ->withConfiguredRule(ReplaceArgumentDefaultValueRector::class, [
            new ReplaceArgumentDefaultValue('Super', 'testClass', 0, 'asc', 'Super::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'replaceClass', 0, 'asc', 'Super::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'testClass', 0, 'ASC', 'Super::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'replaceClass', 0, 'ASC', 'Super::SORT_ORDER_ASC'),
            # ----
            new ReplaceArgumentDefaultValue('Super', 'testSelf', 0, 'asc', 'self::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'replaceSelf', 0, 'asc', 'self::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'testSelf', 0, 'ASC', 'self::SORT_ORDER_ASC'),
            new ReplaceArgumentDefaultValue('Super', 'replaceSelf', 0, 'ASC', 'self::SORT_ORDER_ASC'),

        ]);

Rector version: 2.4.2 - released at 2026-04-16 14:00