PHP中CURL的CURLOPT_POSTFIELDS参数使用细节_php技巧
在通常情况下,我们使用 CURL 来提交 POST 数据的时候,我们已经习惯了这样的写法:
但是这样的写法在有时候并不会很好用,可能会得到服务器返回的 500 错误。但是我们尝试在使用 Socket 方式向服务器提交数据的时候,我们会得到非常正确的结果。
例如我们在服务器上面存在一个如下的 PHP 文件:
当我们采用 CURL 在不注意细节的前提下向服务器发送一些数据,我们可能得到下面这样的结果,这不是我们理想中的结果:
但是如果我们在采用 http_build_query($post_data) 来替代 $post_data 再向这个 PHP 脚本提交数据的时候,我们就会得到和上面不同的结果,这才是我们理想中的结果:
从上面这个例子中不难看出,使用 CURL 并且参数为数据时,向服务器提交数据的时候,HTTP头会发送Content_type: application/x-www-form-urlencoded。这个是正常的网页

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