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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Trait ElementTrait  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @filesource   ElementTrait.php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @created      08.05.2017  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package      chillerlan\PrototypeDOM\Traits  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author       Smiley <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright    2017 Smiley  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license      MIT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace chillerlan\PrototypeDOM\Traits;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use chillerlan\PrototypeDOM\Node\PrototypeElement;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                trait ElementTrait{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	use TraversalTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @link http://api.prototypejs.org/dom/Element/wrap/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement $wrapper  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function wrap(PrototypeElement $wrapper):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $wrapper->insert($this->replace($wrapper));  | 
            
                            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @link http://api.prototypejs.org/dom/Element/update/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string|\DOMNode|\DOMNodeList $content  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function update($content):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->purge();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->insert($content);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @link http://api.prototypejs.org/dom/Element/insert/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Accepted insertion points are:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * - before (as element's previous sibling)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * - after (as element's next sibling)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * - top (as element's first child)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * - bottom (as element's last child)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string|array|\DOMNode|\DOMNodeList $content  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public function insert($content):PrototypeElement{ | 
            
            
                                                                        
                            
            
                                    
            
            
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                		if(is_array($content)){ | 
            
            
                                                                        
                            
            
                                    
            
            
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                			foreach(['before', 'after', 'top', 'bottom'] as $pos){ | 
            
            
                                                                        
                            
            
                                    
            
            
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                				if(array_key_exists($pos, $content)){ | 
            
            
                                                                        
                            
            
                                    
            
            
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                					$nodes = $this->ownerDocument->_toNodeList($content[$pos]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                					if($pos === 'top' && $this->hasChildNodes() || $pos === 'after' && $this->nextSibling){ | 
            
                            
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                						$nodes->reverse();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                					}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                					foreach($nodes as $node){ | 
            
            
                                                                        
                            
            
                                    
            
            
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                						call_user_func_array([$this, 'insert_'.$pos], [$node]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                					}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                				}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		else{ | 
            
            
                                                                        
                            
            
                                    
            
            
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                			foreach($this->ownerDocument->_toNodeList($content) as $node){ | 
            
            
                                                                        
                            
            
                                    
            
            
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                				$this->insert_bottom($node);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		return $this;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement      $node  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement|null $refNode  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function insert_before(PrototypeElement $node, PrototypeElement $refNode = null):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if($this->parentNode){ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->parentNode->insertBefore($this->_importNode($node), $refNode ?? $this);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement $node  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function insert_after(PrototypeElement $node):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return !$this->nextSibling && $this->parentNode  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			? $this->parentNode->insert_bottom($node)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			: $this->nextSibling->insert_before($node);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement $node  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function insert_top(PrototypeElement $node):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $this->hasChildNodes()  | 
            
                            
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                			? $this->firstChild->insert_before($node, $this->firstChild)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			: $this->insert_bottom($node);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param \chillerlan\PrototypeDOM\Node\PrototypeElement $node  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return \chillerlan\PrototypeDOM\Node\PrototypeElement  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function insert_bottom(PrototypeElement $node):PrototypeElement{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             6                          | 
                
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                		$this->appendChild($this->_importNode($node));  | 
            
                            
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                             6                          | 
                
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                		return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    137
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                }  | 
            
            
                                                        
            
                                    
            
            
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: