PHP Parse error: parse error, unexpected T_OBJECT_OPERATOR

代碼

<?php   

$URL="http://dict.cn/ws.php?q=content";   
$dom = new DomDocument();    
$dom->load($URL);   
//print"<pre>";   
    //print( $dom->saveXML());   
    $dictArray = $dom->getElementsByTagName("dict");   
foreach( $dictArray as $dict ) {   
$key = $dict->getElementsByTagName("key");   
$key=$key->item(0)->nodeValue;   
$key= iconv("UTF-8","GB2312",$key);     //注意要轉碼對於中文，因為XML預設為UTF-8格式   
          echo ("***輸出>key>的內容：****：".$key);   

$lang = $dict->getElementsByTagName("lang");   
$lang = utf8_decode($lang->item(0)->nodeValue);   
echo "<br>";   
echo ("***輸出>lang>的內容：****：".$lang);   
     }   

?>   

客戶回函以上代碼空白，apache報錯日誌以下

PHP Parse error:  parse error, unexpected T_OBJECT_OPERATOR in /var/www/vhosts/xxh.com/httpdocs/test.php on line 11
Content-type: text/html
X-Powered-By: PHP/4.3.9

後來傳到PHP5.1版本發現正常。

PHP 4.3.9 有問題
PHP 5.1.6 (cli) 沒問題