php 调用未定义的函数：simplexml_load_string()
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Call to undefined function: simplexml_load_string()
提问by anil
I am implementing facebook count function using cron file. In which cron runs every 10 minutes and counts the total likes of a page.
我正在使用 cron 文件实现 Facebook 计数功能。其中 cron 每 10 分钟运行一次，并计算页面的总点赞数。
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.
但我收到未定义的调用函数错误。
回答by Andreas Bergstr?m
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 Ond?ej Sury's PPA (sudo add-apt-repository ppa:ondrej/php). Go to /etc/php/7.0/fpm and edit php.ini, uncomment to following line:
对于 PHP 7 和 Ubuntu 14.04，过程如下。由于 PHP 7 不在官方 Ubuntu PPA 中，您可能是通过 Ond?ej Sury 的 PPA（sudo add-apt-repository ppa:ondrej/php）安装的。转到 /etc/php/7.0/fpm 并编辑 php.ini，取消注释以下行：
extension=php_xmlrpc.dll
Then simply install php7.0-xml:
然后只需安装php7.0-xml：
sudo apt-get install php7.0-xml
And restart PHP:
并重新启动 PHP：
sudo service php7.0-fpm restart
And restart Apache:
并重新启动Apache：
sudo service apache2 restart
If you are on a later Ubuntu version where PHP 7 is included, the procedure is most likely the same as well (except adding any 3rd party repository).
如果您使用的是包含 PHP 7 的更高版本的 Ubuntu，则该过程很可能也是相同的（除了添加任何 3rd 方存储库）。
回答by Fabian Blechschmidt
If the XML module is not installed, install it.
如果未安装 XML 模块，请安装它。
Current version 5.6 on ubuntu 14.04:
ubuntu 14.04 上的当前版本 5.6：
sudo apt-get install php5.6-xml
And don't forget to run sudo service apache2 restart command after it
并且不要忘记在它之后运行 sudo service apache2 restart 命令
Zulhilmi Zainudi
祖利米再努迪
回答by Promise Preston
I also faced this issue. My Operating system is Ubuntu 18.04and my PHP version is PHP 7.2.
我也遇到过这个问题。我的操作系统是Ubuntu 18.04而我的 PHP 版本是PHP 7.2。
Here's how I solved it:
这是我解决它的方法：
Install Simplexml on your Ubuntu Server:
在你的 Ubuntu 服务器上安装 Simplexml：
sudo apt-get install php7.2-simplexml
Restart Apache Server
重启 Apache 服务器
sudo systemctl restart apache2
That's all.
就这样。
I hope this helps
我希望这有帮助
回答by Bj?rn Pfoster
I think it can be something like in this Post: Class 'SimpleXMLElement' not found on puphpet PHP 5.6So maybe you could install/activate
我认为它可能类似于这篇文章： 在 puphpet PHP 5.6 上找不到 Class 'SimpleXMLElement'所以也许你可以安装/激活
php-xml or php-simplexml
Do not forget to activate the libraries in the php.inifile. (like the top comment)
不要忘记激活php.ini文件中的库。（如置顶评论）
回答by marian0
Make sure that you have php-xml module installed and enabled in php.ini.
确保在 .php 中安装并启用了 php-xml 模块php.ini。
You can also change response format to json which is easier to handle. In that case you have to only add &format=jsonto url query string.
您还可以将响应格式更改为更易于处理的 json。在这种情况下，您只需添加&format=json到 url 查询字符串。
$rest_url = "http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=".urlencode($source_url);
And then use json_decode()to retrieve data in your script:
然后用于json_decode()检索脚本中的数据：
$result = json_decode($content, true);
$fb_like_count = $result['like_count'];
回答by yesnik
To fix this error on Centos 7:
要在Centos 7上修复此错误：
Install PHP extension:
sudo yum install php-xml
Restart your web server. In my case it's php-fpm:
services php-fpm restart
安装 PHP 扩展：
须藤 yum 安装 php-xml
重新启动您的网络服务器。就我而言，它是php-fpm：
服务 php-fpm 重启
回答by Ajay Singh
For Nginx (without apache) and PHP 7.2, installing php7.2-xml wasn't enough. Had to install php7.2-simplexml package to get it to work
对于 Nginx（没有 apache）和 PHP 7.2，安装 php7.2-xml 是不够的。必须安装 php7.2-simplexml 包才能使其工作
So the commands for debian/ubuntu, update packages and install both packages
所以 debian/ubuntu 的命令，更新包并安装这两个包
apt update
apt install php7.2-xml php7.2-simplexml
And restart both Nginx and php
并重新启动 Nginx 和 php
systemctl restart nginx php7.2-fpm
