[8.x] Add a simple Str::repeat() helper function (#36887)

* Add Str::repeat() function

* Fix styleci issues

* Fix styleci issues (again)

Author: JonaLoeffler

src/Illuminate/Support/Str.php

@@ -491,6 +491,18 @@ public static function random($length = 16)
         return $string;
     }
 
+    /**
+     * Repeat the given string.
+     *
+     * @param  string  $string
+     * @param  int  $times
+     * @return string
+     */
+    public static function repeat(string $string, int $times)
+    {
+        return str_repeat($string, $times);
+    }
+
     /**
      * Replace a given value in the string sequentially with an array.
      *

src/Illuminate/Support/Stringable.php

@@ -479,6 +479,17 @@ public function remove($search, $caseSensitive = true)
         return new static(Str::remove($search, $this->value, $caseSensitive));
     }
 
+    /**
+     * Repeat the string.
+     *
+     * @param  int  $times
+     * @return static
+     */
+    public function repeat(int $times)
+    {
+        return new static(Str::repeat($this->value, $times));
+    }
+
     /**
      * Replace the given value in the given string.
      *

tests/Support/SupportStrTest.php

@@ -531,6 +531,12 @@ public function testMarkdown()
         $this->assertSame("<p><em>hello world</em></p>\n", Str::markdown('*hello world*'));
         $this->assertSame("<h1>hello world</h1>\n", Str::markdown('# hello world'));
     }
+
+    public function testRepeat()
+    {
+        $this->assertSame('aaaaa', Str::repeat('a', 5));
+        $this->assertSame('', Str::repeat('', 5));
+    }
 }
 
 class StringableObjectStub

tests/Support/SupportStringableTest.php

@@ -602,4 +602,10 @@ public function testMarkdown()
         $this->assertEquals("<p><em>hello world</em></p>\n", $this->stringable('*hello world*')->markdown());
         $this->assertEquals("<h1>hello world</h1>\n", $this->stringable('# hello world')->markdown());
     }
+
+    public function testRepeat()
+    {
+        $this->assertSame('aaaaa', (string) $this->stringable('a')->repeat(5));
+        $this->assertSame('', (string) $this->stringable('')->repeat(5));
+    }
 }