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:

 <?php
 $a = 1;
 $b = [1];
 $c = [];
 
-if (in_array($a, $b)) {
-	
-} elseif (in_array($a, $c)) {
-	echo "elseif";
+if (!in_array($a, $b) && in_array($a, $c)) {
+    echo "elseif";
 } else {
 	echo "else";
 }

PHP snippet to change

<?php
$a = 1;
$b = [1];
$c = [];

if (in_array($a, $b)) {
	
} elseif (in_array($a, $c)) {
	echo "elseif";
} else {
	echo "else";
}

Applied Rules:

RemoveDeadIfBlockRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\If_\RemoveDeadIfBlockRector;

return RectorConfig::configure()
    ->withRules([
        RemoveDeadIfBlockRector::class
    ]);

Rector version: 323e82 - released at 2026-09-06 08:08