[7.x] Added new Stringable::leftTrim() and Stringable::rightTrim() me…

…thods (#32288)

* Added new Stringable::leftTrim() and Stringable::rightTrim() methods

* Updated method names to match PHP functions and updated tests to pass

src/Illuminate/Support/Stringable.php

@@ -539,6 +539,28 @@ public function trim($characters = null)
         return new static(trim(...array_merge([$this->value], func_get_args())));
     }
 
+    /**
+     * Left trim the string of the given characters.
+     *
+     * @param  string  $characters
+     * @return static
+     */
+    public function ltrim($characters = null)
+    {
+        return new static(ltrim(...array_merge([$this->value], func_get_args())));
+    }
+
+    /**
+     * Right trim the string of the given characters.
+     *
+     * @param  string  $characters
+     * @return static
+     */
+    public function rtrim($characters = null)
+    {
+        return new static(rtrim(...array_merge([$this->value], func_get_args())));
+    }
+
     /**
      * Make a string's first character uppercase.
      *

tests/Support/SupportStringableTest.php

@@ -51,6 +51,16 @@ public function testTrim()
         $this->assertSame('foo', (string) $this->stringable(' foo ')->trim());
     }
 
+    public function testLtrim()
+    {
+        $this->assertSame('foo ', (string) $this->stringable(' foo ')->ltrim());
+    }
+
+    public function testRtrim()
+    {
+        $this->assertSame(' foo', (string) $this->stringable(' foo ')->rtrim());
+    }
+
     public function testCanBeLimitedByWords()
     {
         $this->assertSame('Taylor...', (string) $this->stringable('Taylor Otwell')->words(1));