调用未定义的函数：simplexml_load_string（）在cron文件中

问题描述

我使用cron文件实现facebook计数功能。

  for（$ i = 0; $ i< 3; $ i ++）{
 $ source_url = $ cars [$ i]; 
 $ rest_url =http://api.facebook.com/restserver.php?method=links.getStats&urls=\".urlencode($source_url）; 
 $ curl = curl_init（）; 
 curl_setopt（$ curl，CURLOPT_URL，$ rest_url）; 
 curl_setopt（$ curl，CURLOPT_RETURNTRANSFER，1）; 
 $ content = curl_exec（$ curl）; 
 curl_close（$ curl）; 
 $ message = stripslashes（$ content）; 
 $ xml_record = simplexml_load_string（$ message）; 
 $ fb_like_count = $ xml_record-> link_stat-> like_count; 
 echo。$ fb_like_count; 
 mail（[email protected]，hi。$ fb_like_count，$ message）; 
} 
  

但是我正在调用未定义的调用函数错误。

解决方案

对于PHP 7和Ubuntu 14.04，过程如下。由于PHP 7不在官方Ubuntu PPAs，你可能通过OndřejSurý的PPA（sudo add-apt-repository ppa：ondrej / php）安装它。转到/etc/php/7.0/fpm并编辑php.ini，取消注释到以下行：

  extension = php_xmlrpc.dll 
  

然后只需安装php7.0-xml：

  sudo apt-get install php7.0-xml 
  

重新启动PHP：

  sudo服务php7.0-fpm restart 
  pre> 
 
 
如果您使用的是包含PHP 7的更高版本的Ubuntu版本，该过程很可能也是一样。
 
I am implementing facebook count function using cron file. In which cron runs every 10 minutes and counts the total likes of a page.
for($i=0;$i<3;$i++){
    $source_url =$cars[$i];
    $rest_url = "http://api.facebook.com/restserver.php?method=links.getStats&urls=".urlencode($source_url);
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL,$rest_url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $content = curl_exec($curl);
    curl_close($curl);
    $message=stripslashes($content);
    $xml_record = simplexml_load_string($message);
    $fb_like_count = $xml_record->link_stat->like_count;
    echo "".$fb_like_count;
    mail("[email protected]","hi".$fb_like_count,$message);
}
But I am geting undefined call function error. 
 解决方案 
For PHP 7 and Ubuntu 14.04 the procedure is follows. Since PHP 7 is not in the official Ubuntu PPAs you likely installed it through Ondřej Surý's PPA (sudo add-apt-repository ppa:ondrej/php). Go to /etc/php/7.0/fpm and edit php.ini, uncomment to following line:
extension=php_xmlrpc.dll
Then simply install php7.0-xml:
sudo apt-get install php7.0-xml
And restart PHP:
sudo service php7.0-fpm restart
If you are on a later Ubuntu version where PHP 7 is included, the procedure is most likely the same as well.
                        
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