[5.5] Rescue helper

src/Illuminate/Support/helpers.php

@@ -742,6 +742,24 @@ function preg_replace_array($pattern, array $replacements, $subject)
     }
 }
 
+if (! function_exists('rescue')) {
+    /**
+     * Catch a potential exception and return a default.
+     *
+     * @param  callable  $rescuee
+     * @param  mixed     $rescuer
+     * @return mixed
+     */
+    function rescue(callable $rescuee, $rescuer)
+    {
+        try {
+            return $rescuee();
+        } catch (Throwable $e) {
+            return is_callable($rescuer) ? $rescuer() : $rescuer;
+        }
+    }
+}
+
 if (! function_exists('retry')) {
     /**
      * Retry an operation a given number of times.

tests/Support/SupportHelpersTest.php

@@ -794,6 +794,34 @@ public function something()
         })->present()->something());
     }
 
+    public function testRescue()
+    {
+        $this->assertEquals(rescue(function () {
+            throw new Exception;
+        }, 'rescued!'), 'rescued!');
+
+        $this->assertEquals(rescue(function () {
+            throw new Exception;
+        }, function () {
+            return 'rescued!';
+        }), 'rescued!');
+
+        $this->assertEquals(rescue(function () {
+            return 'no need to rescue';
+        }, 'rescued!'), 'no need to rescue');
+
+        $testClass = new class {
+            public function test(int $a)
+            {
+                return $a;
+            }
+        };
+
+        $this->assertEquals(rescue(function () use ($testClass) {
+            $testClass->test([]);
+        }, 'rescued!'), 'rescued!');
+    }
+
     public function testTransform()
     {
         $this->assertEquals(10, transform(5, function ($value) {