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curl - How to suppress the output of remote calling addresses in php

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Release： 2016-08-04 09:19:51
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I used the curl method in the interface to call a remote address. There is content output in this address. This output affects the output format of my interface. How can I prohibit the output of this remote address? In addition, the output of the remote link is not Should it be the return value after curl_exec execution? Why is it printed directly in the browser?

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I used the curl method in the interface to call a remote address. There is content output in this address. This output affects the output format of my interface. How can I prohibit the output of this remote address? In addition, the output of the remote link is not Should it be the return value after curl_exec execution? Why is it printed directly in the browser? 

<code class="php">$url = 'http://postzz173.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
//返回而不是直接输出
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//re变量里存的才是获取的内容
$re = curl_exec($ch); 
//要输出就执行
echo ($re);</code>
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