symfony
diff --git a/‎src/Symfony/Component/String/AbstractString.php
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diff --git a/‎src/Symfony/Component/String/AbstractUnicodeString.php
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diff --git a/‎src/Symfony/Component/String/ByteString.php
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diff --git a/‎src/Symfony/Component/String/CHANGELOG.md
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diff --git a/‎src/Symfony/Component/String/Tests/AbstractAsciiTestCase.php
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diff --git a/‎src/Symfony/Component/String/Tests/AbstractUnicodeTestCase.php
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+12Lines changed: 12 additions & 0 deletions b/‎src/Symfony/Component/String/Tests/AbstractUnicodeTestCase.php
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@@ -692,6 +692,11 @@ public function wordwrap(int $width = 75, string $break = "\n", bool $cut = fals
         return $str;
     }
 
+    /**
+     * @return static
+     */
+    abstract public function reverse(): self;
+
     public function __sleep(): array
     {
         return ['string'];
 
@@ -444,6 +444,17 @@ public function width(bool $ignoreAnsiDecoration = true): int
         return $width;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function reverse(): parent
+    {
+        $str = clone $this;
+        $str->string = implode('', array_reverse(preg_split('/(\X)/u', $str->string, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY)));
+
+        return $str;
+    }
+
     /**
      * @return static
      */
 
@@ -474,4 +474,15 @@ public function width(bool $ignoreAnsiDecoration = true): int
 
         return $width;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reverse(): parent
+    {
+        $str = clone $this;
+        $str->string = strrev($str->string);
+
+        return $str;
+    }
 }
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+5.1.0
+-----
+
+ * Added the `AbstractString::reverse()` method.
+
 5.0.0
 -----
 
 
@@ -1377,4 +1377,23 @@ public function testToString()
 
         self::assertSame('foobar', $instance->toString());
     }
+
+    /**
+     * @dataProvider provideReverse
+     */
+    public function testReverse(string $expected, string $origin)
+    {
+        $instance = static::createFromString($origin)->reverse();
+
+        $this->assertEquals(static::createFromString($expected), $instance);
+    }
+
+    public static function provideReverse()
+    {
+        return [
+            ['', ''],
+            ['oof', 'foo'],
+            ["\n!!!\tTAERG SI     ynofmyS    ", "    Symfony     IS GREAT\t!!!\n"],
+        ];
+    }
 }
@@ -568,4 +568,16 @@ public static function providePadStart(): array
             ]
         );
     }
+
+    public static function provideReverse()
+    {
+        return array_merge(
+            parent::provideReverse(),
+            [
+                ['äuß⭐erst', 'tsre⭐ßuä'],
+                ['漢字ーユニコードéèΣσς', 'ςσΣèéドーコニユー字漢'],
+                ['नमस्ते', 'तेस्मन'],
+            ]
+        );
+    }
 }
Original file line number	Diff line number	Diff line change
`@@ -692,6 +692,11 @@ public function wordwrap(int $width = 75, string $break = "\n", bool $cut = fals`
`692`	`692`	`return $str;`
`693`	`693`	`}`
`694`	`694`
	`695`	`+ /**`
	`696`	`+ * @return static`
	`697`	`+ */`
	`698`	`+ abstract public function reverse(): self;`
	`699`	`+`
`695`	`700`	`public function __sleep(): array`
`696`	`701`	`{`
`697`	`702`	`return ['string'];`
Original file line number	Diff line number	Diff line change
`@@ -568,4 +568,16 @@ public static function providePadStart(): array`
`568`	`568`	`]`
`569`	`569`	`);`
`570`	`570`	`}`
	`571`	`+`
	`572`	`+ public static function provideReverse()`
	`573`	`+ {`
	`574`	`+ return array_merge(`
	`575`	`+ parent::provideReverse(),`
	`576`	`+ [`
	`577`	`+ ['äuß⭐erst', 'tsre⭐ßuä'],`
	`578`	`+ ['漢字ーユニコードéèΣσς', 'ςσΣèéドーコニユー字漢'],`
	`579`	`+ ['नमस्ते', 'तेस्मन'],`
	`580`	`+ ]`
	`581`	`+ );`
	`582`	`+ }`
`571`	`583`	`}`