Add stringable support for strip_tags() (#39098)

* Update Stringable.php

* Update SupportStringableTest.php

* Update Stringable.php

* Update SupportStringableTest.php

* Update Stringable.php

* Update SupportStringableTest.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: intrepidws

src/Illuminate/Support/Stringable.php

@@ -565,6 +565,17 @@ public function start($prefix)
         return new static(Str::start($this->value, $prefix));
     }
 
+    /**
+     * Strip HTML and PHP tags from the given string.
+     *
+     * @param  string  $allowedTags
+     * @return static
+     */
+    public function stripTags($allowedTags = null)
+    {
+        return new static(strip_tags($this->value, $allowedTags));
+    }
+
     /**
      * Convert the given string to upper-case.
      *

tests/Support/SupportStringableTest.php

@@ -686,4 +686,12 @@ public function testWordCount()
         $this->assertEquals(2, $this->stringable('Hello, world!')->wordCount());
         $this->assertEquals(10, $this->stringable('Hi, this is my first contribution to the Laravel framework.')->wordCount());
     }
+
+    public function testStripTags()
+    {
+        $this->assertSame('beforeafter', (string) $this->stringable('before<br>after')->stripTags());
+        $this->assertSame('before<br>after', (string) $this->stringable('before<br>after')->stripTags('<br>'));
+        $this->assertSame('before<br>after', (string) $this->stringable('<strong>before</strong><br>after')->stripTags('<br>'));
+        $this->assertSame('<strong>before</strong><br>after', (string) $this->stringable('<strong>before</strong><br>after')->stripTags('<br><strong>'));
+    }
 }