smaller.alwaysFalse

Code example

<?php declare(strict_types = 1);

function doFoo(int $i): void
{
    if ($i > 5) {
        if ($i < 3) {
            // never reached
        }
    }
}

Why is it reported?

The < (less than) comparison always evaluates to false because the types of the compared values make it impossible for the condition to be true. In this example, inside the if ($i > 5) branch, the variable $i is known to be of type int<6, max>. Comparing $i < 3 is always false because a value that is at least 6 can never be less than 3.

This usually indicates a logic error or a redundant check that can never be reached.

How to fix it

Fix the comparison to use the correct value:

 <?php declare(strict_types = 1);

 function doFoo(int $i): void
 {
     if ($i > 5) {
-        if ($i < 3) {
+        if ($i < 10) {
             // ...
         }
     }
 }

Or remove the unreachable condition entirely:

 <?php declare(strict_types = 1);

 function doFoo(int $i): void
 {
     if ($i > 5) {
-        if ($i < 3) {
-            // never reached
-        }
+        // execute code directly
     }
 }