blocks|key|854058|text|curl是一个需要安装的扩展，它与PHP版本无关。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|854059|http://www.php.net/manual/en/curl.setup.php|offset|length|854060|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|17|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

curl is an extension that needs to be installed, it's got nothing to do with the PHP version.

<a href="http://www.php.net/manual/en/curl.setup.php" rel="noreferrer">http://www.php.net/manual/en/curl.setup.php</a>

blocks|key|854089|text|$ch+=+curl_init('http://api.imgur.com/2/upload.xml');+//initialising+our+url

curl_setopt($ch,+CURLOPT_MUTE,+1);

curl_setopt($ch,+CURLOPT_SSL_VERIFYHOST,+FALSE);++//used+for+https+headers+

curl_setopt($ch,+CURLOPT_SSL_VERIFYPEER,+FALSE);++//used+for+https+headers

curl_setopt($ch,+CURLOPT_POST,+1);

curl_setopt($ch,+CURLOPT_POSTFIELDS,+urlencode($pvars));++
//the+value+we+post

curl_setopt($ch,+CURLOPT_RETURNTRANSFER,+1);+//waiting+for+reponse,+default+value+in+php+is+zero+ie,+curls+normally+do+not+wait+for+a+response

curl_setopt($ch,+CURLOPT_USERAGENT,+'Mozilla/5.0+(Windows;+U;+Windows+NT+5.1;+en-US;+rv:1.7.5)+Gecko/20041107+Firefox/1.0');+

$output+=+curl_exec($ch);+//the+real+execution+
curl_close($ch);

echo+$output;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|854090|试试这段代码。我不能肯定这一点。但我使用它将xml数据发送到远程url。|unstyled|854091|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>$ch = curl_init('http://api.imgur.com/2/upload.xml'); //initialising our url

curl_setopt($ch, CURLOPT_MUTE, 1);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //used for https headers 

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); //used for https headers

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, urlencode($pvars)); 
//the value we post

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //waiting for reponse, default value in php is zero ie, curls normally do not wait for a response

curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0'); 

$output = curl_exec($ch); //the real execution 
curl_close($ch);

echo $output;
</code></pre>

Try this code. I am not sure about it. But i used it to send xml data to a remote url.

blocks|key|854123|text|在Debian和Ubuntu的旧版本中，您可以通过安装PHP的Curl扩展并重新启动PHP服务器来解决此问题。假设the服务器是Apache+2：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|854124|sudo+apt-get+install+php5-curl
sudo+service+apache2+restart|code-block|syntax|javascript|854125|在较新的版本中，包名称已更改：|854126|sudo+apt+install+php-curl|854127|您可能需要安装更多：|854128|sudo+apt-get+install+curl+libcurl3+libcurl3-dev;|854129|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

On old versions of Debian and Ubuntu, you solved this by installing the Curl extension for PHP, and restarting the webserver. Assuming the webserver is Apache 2:

<pre><code>sudo apt-get install php5-curl
sudo service apache2 restart
</code></pre>

On newer versions, the package name as changed:

<pre><code>sudo apt install php-curl
</code></pre>

It's possible you'll need to install more:

<pre><code>sudo apt-get install curl libcurl3 libcurl3-dev;
</code></pre>

blocks|key|1068682|text|对于Windows7+x64，有一个包含所有必要细节的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1068683|http://www.youtube.com/watch?v=7qNTi1sEfE8|offset|length|1068684|它是用法语写的，但你什么都能听懂！我解决了同样的问题，甚至不会说法语。:-)|1068685|许多答案忘记提到，您需要从以下位置添加新版本的php_curl.dll文件：http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/|1068686|我从归档文件php_curl-5.4.3-VC9-x64.zip添加了新版本的php_curl.dll到文件夹:+C:\wamp\bin\php\php5.4.3\ext和C:\Windows\System32，一切都很好！|1068687|entityMap|0|LINK|mutability|MUTABLE|url|1|http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/^0|0|0|16|0|0|0|12|1Z|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|J|3|K|5|6|7|14|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|C]]|S|$5|O|P|Q|A|$R|T]]]]

There is solution with all necessary details for Windows 7 x64:

<a href="http://www.youtube.com/watch?v=7qNTi1sEfE8" rel="nofollow">http://www.youtube.com/watch?v=7qNTi1sEfE8</a>

It is in French, but you can understand everything! I solved same problem, even don't speak French. :-)

Many answers forget to mention that you need to add new version of php_curl.dll file from this location: <a href="http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/" rel="nofollow">http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/</a>

I added new version of php_curl.dll from archive php_curl-5.4.3-VC9-x64.zip to folders: C:\wamp\bin\php\php5.4.3\ext and C:\Windows\System32 and everything was fine!

blocks|key|854237|text|这是来自官方网站的。php.net|type|unstyled|depth|inlineStyleRanges|entityRanges|data|854238|在安装PHP之后。|854239|视窗|854240|移动到Windows\system32文件夹:+libssh2.dll，php_curl.dll，ssleay32.dll，libeay32.dll|854241|Linux|854242|移动到Apache24\bin文件夹libssh2.dll|854243|然后在php.ini中取消注释extension=php_curl.dll|854244|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|S|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|V|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|O|$]]

<h2>This is from the official website. php.net</h2>

After installation of PHP. 

<h2>Windows</h2>

Move to Windows\system32 folder:
libssh2.dll, php_curl.dll, ssleay32.dll, libeay32.dll

<h2>Linux</h2>

Move to Apache24\bin folder
libssh2.dll

Then uncomment extension=php_curl.dll in php.ini

blocks|key|1068739|text|执行此操作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1068740|sudo+apt-get+install+php-curl|code-block|syntax|javascript|1068741|并重新启动服务器|1068742|sudo+service+apache2+restart|1068743|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

do this

<pre><code>sudo apt-get install php-curl
</code></pre>

and restart server

<pre><code>sudo service apache2 restart
</code></pre>

blocks|key|854291|text|在运行PHP+7.1.14的ubuntu+16.04上体验到了这一点。要解决此问题，首先将其放入脚本并执行。如果安装并启用了curl，则返回true，否则返回false。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|854292|<?php
++++var_dump(extension_loaded('curl'));
?>|code-block|syntax|javascript|854293|如果返回false，则运行|854294|sudo+apt-get+install+php7.1-curl|854295|最后，|854296|sudo+service+apache2+restart|854297|重新启动后，脚本将返回true，希望您的错误能够得到解决。|854298|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Experienced this on ubuntu 16.04 running PHP 7.1.14. To resolve,first put this in a script and execute. It will return true if curl is installed and enabled,otherwise, it will return false.

<pre><code>&lt;?php
 var_dump(extension_loaded('curl'));
?&gt;
</code></pre>

If it returns false, run

<pre><code>sudo apt-get install php7.1-curl
</code></pre>

And finally, 

<pre><code>sudo service apache2 restart
</code></pre>

After the restart, the script will return true and hopefully, your error should be resolved.

blocks|key|1068797|text|适用于ubuntu上的php+7.0|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1068798|sudo+apt-get+install+php7.0-curl|code-block|syntax|javascript|1068799|最后，|1068800|sudo+service+apache2+restart+|1068801|或|1068802|sudo+service+nginx+restart|1068803|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

for php 7.0 on ubuntu use 

<pre><code>sudo apt-get install php7.0-curl
</code></pre>

And finally,

<pre><code>sudo service apache2 restart 
</code></pre>

or

<pre><code>sudo service nginx restart
</code></pre>

<pre><code>&lt;?php
$filename = "xx.gif";
$handle = fopen($filename, "r");
$data = fread($handle, filesize($filename));

// $data is file data
$pvars = array('image' =&gt; base64_encode($data), 'key' =&gt; IMGUR_API_KEY);
$timeout = 30;
$curl = curl_init();

curl_setopt($curl, CURLOPT_URL, 'http://api.imgur.com/2/upload.xml');
curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $pvars);

$xml = curl_exec($curl);

curl_close ($curl);

var_dump($xml);
?&gt;
</code></pre>

I'm playing with the Imgur API, but it doesn't seems to work. PHP.net says that <code>curl_init()</code> is in PHP5, but my host says it isn't. How can I make this work?

Fatal error: Call to undefined function curl_init()

服务器

Windows

Ubuntu

Debian

Linux

<?php$filename = "xx.gif";$handle = fopen($filename, "r");$data = fread($handle, filesize($filename));// $data is file data$pvars = array('image' => base64_en...

问致命错误:调用未定义的函数curl_init()
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