bug #394 [Php80] Fix str_ends_with() when needle is longer than haystack (SpacePossum)

This PR was squashed before being merged into the 1.23-dev branch.

Discussion
----------

[Php80] Fix str_ends_with() when needle is longer than haystack

Little bug, found in PHP-CS-Fixer/PHP-CS-Fixer#6323

https://3v4l.org/oHUKH

```php
<?php
error_reporting(E_ALL);
$needle = '[]';
echo \substr_compare('', $needle, -\strlen($needle));
```

show issues for

```
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.17, 7.3.0 - 7.3.4
Warning: substr_compare(): The start position cannot exceed initial string length in /in/oHUKH on line 4
```

Looking at the test matrix I assume the tests will run latest 7.2 which is not effected,
~so I naively changed it here in this draft to see if my test indeeds fails on the CI (I don't have an easy 7.2.17 or 7.1.0 env. at hand at the moment)~ @ see shivammathur/setup-php#570

Commits
-------

09a94a5 [Php80] Fix str_ends_with() when needle is longer than haystack

Author: nicolas-grekas

CHANGELOG.md

@@ -1,6 +1,7 @@
 # 1.25.0
 
   * Add `PhpToken` to the PHP 8.0 polyfill when the tokenizer extension is enabled
+  * Fix `str_ends_with()` when needle is longer than haystack
 
 # 1.24.0
 

src/Php80/Php80.php

@@ -100,6 +100,16 @@ public static function str_starts_with(string $haystack, string $needle): bool
 
     public static function str_ends_with(string $haystack, string $needle): bool
     {
-        return '' === $needle || ('' !== $haystack && 0 === substr_compare($haystack, $needle, -\strlen($needle)));
+        if ('' === $needle || $needle === $haystack) {
+            return true;
+        }
+
+        if ('' === $haystack) {
+            return false;
+        }
+
+        $needleLength = \strlen($needle);
+
+        return $needleLength <= \strlen($haystack) && 0 === substr_compare($haystack, $needle, -$needleLength);
     }
 }

tests/Php80/Php80Test.php

@@ -192,6 +192,8 @@ public function testStrEndsWith()
         $testEmoji = '🙌🎉✨🚀'; // 0xf0 0x9f 0x99 0x8c 0xf0 0x9f 0x8e 0x89 0xe2 0x9c 0xa8 0xf0 0x9f 0x9a 0x80
         $this->assertTrue(str_ends_with($testEmoji, '🚀')); // 0xf0 0x9f 0x9a 0x80
         $this->assertFalse(str_ends_with($testEmoji, '✨')); // 0xe2 0x9c 0xa8
+
+        $this->assertFalse(str_ends_with('', '[]'));
     }
 
     /**