adding method call by lambda-string

src/PerrysLambda/ArrayBase.php

@@ -1180,4 +1180,27 @@ public function count()
     }
 
 
+    // String ------------------------------------------------------------------
+
+
+    /**
+     * Convert object content to string (php serialize)
+     * @return string
+     */
+    public function toString()
+    {
+        return serialize($this->getData());
+    }
+
+
+    /**
+     * Convert object content to string
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+
+
 }

src/PerrysLambda/LambdaUtils.php

@@ -7,7 +7,7 @@
 
 class LambdaUtils
 {
-    
+
     /**
      * Converts strings, empty strings and NULL into a callable
      * @param string|callable|null $mixed
@@ -33,6 +33,10 @@ public static function toCallable($mixed=null)
             {
                 if(is_object($v))
                 {
+                    if(method_exists($v, $mixed))
+                    {
+                        return $v->$mixed();
+                    }
                     return $v->$mixed;
                 }
                 else
@@ -41,7 +45,7 @@ public static function toCallable($mixed=null)
                 }
             };
         }
-        
+
         throw new InvalidException("Could not convert expression of type ".gettype($mixed)." into a lambda callable");
     }
 

test/LambdaTest.php

@@ -229,6 +229,11 @@ public function testLambda()
         {
             $this->assertEquals($basicdata[$key], $row);
         }
+
+        // string conversion
+        $expected = 'a:3:{s:3:"foo";s:3:"bar";s:4:"foo2";s:4:"bar2";s:6:"foobar";s:6:"barfoo";}';
+        $this->assertSame($expected, $named->toString());
+        $this->assertSame($expected, "".$named);
     }
 
 
@@ -263,6 +268,10 @@ public function testLambdaByString()
 
         $ordertestdesc = $list->orderDesc('b')->thenByDesc('a')->toList()->select('a')->toArray();
         $this->assertSame(array(5, 4, 2, 3), $ordertestdesc);
+
+        // Method call
+        $expected = 'a:4:{s:1:"a";i:3;s:1:"b";s:3:"bar";s:1:"c";s:7:"foobar2";s:1:"d";s:7:"barfoo2";}';
+        $this->assertSame($expected, $list->select('toString')->getAt(1));
     }