php中利用curl访问接口、上传文件

//$params = ['sfsf'=>1];
//$params_url = $base_url.'?'.http_build_query($params);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $params_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
$result = curl_exec($ch);
curl_close($ch);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $base_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
$result = curl_exec($ch);
curl_close($ch);

<=5.4 curl上传文件只支持@语法

= 5.5 支持@语法和CURLFile类

大于=5.6 只支持CURLFile类

$ch = curl_init();
if (class_exists('\CURLFile')) {// 这里用特性检测判断php版本

curl_setopt($curl, CURLOPT_SAFE_UPLOAD, true);
$data = array('file' => new \CURLFile(realpath($source)));//>=5.5

} else {

if (defined('CURLOPT_SAFE_UPLOAD')) {
curl_setopt($curl, CURLOPT_SAFE_UPLOAD, false);
}
$data = array('file' => '@' . realpath($source));//<=5.5
}

curl_setopt($ch, CURLOPT_URL, $base_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
$result = curl_exec($ch);
curl_close($ch);

也可以用curl_file_create(realpath($source))来替代 new \CURLFile(realpath($source)))