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HomeBackend DevelopmentPHP Tutorial接口-php CURLOPT_POSTFIELDS的绝对路径参数怎样填写?(因为图片上传得不到绝对路径)

接口php求救图片上传参数

利用微信的上传图片接口写一个php文件。

<code>HTML代码如下:<input type="file" name="file" value="123"><br><input type="submit" name="submit" value="submit"></code>

php代码:curl_setopt($ch, CURLOPT_POSTFIELDS, 第三个参数);
微信接口要求第三个参数是个media=@绝对路径。
但是上网找了很多资料,似乎无法获得用户上传的图片的绝对路径,求教各位大神,这个问题怎么解决?

ps:本人也找过一些教程,说第三个参数可以为 dirname(__FILE__)."图片名",
dirname得到的是服务器的php文件的目录路径吧?但是假如我的php文件放在/usr/php/里,岂不是要求用户上传的图片也放在他们电脑的/usr/php/里?这个是怎么回事?求教求救,各位大神帮帮我

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