PHP使用curl请求实现post方式上传图片文件功能示例
2018-07-24 本文已影响7人
铁匠简记
在调用第三方api接口时,有时会遇到通过http协议上传图片,以下是一个微信公众平台新增永久素材的例子(使用前请阅读相关微信文档);
php代码:
/* 使用curl函数 */
$url = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=ACCESS_TOKEN&type=image";
$post_data = array(
'media' => '@bag03.jpg',
);
$response = curl_http($url, 'POST', $post_data);
$params = array();
$params = json_decode($response,true);
if (isset($params['errcode']))
{
echo "error:" . $params['errcode'];
echo "msg :" . $params['errmsg'];
exit;
}
var_dump( $params );
/**
* http请求方式: 默认GET
*/
function curl_http($url, $method="GET", $postfields){
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_URL, $url);
switch ($method) {
case "POST":
curl_setopt($ch, CURLOPT_POST, true);
if (!empty($postfields)) {
$hadFile = false;
if (is_array($postfields) && isset($postfields['media'])) {
/* 支持文件上传 */
if (class_exists('\CURLFile')) {
curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true);
foreach ($postfields as $key => $value) {
if (isPostHasFile($value)) {
$postfields[$key] = new \CURLFile(realpath(ltrim($value, '@')));
$hadFile = true;
}
}
} elseif (defined('CURLOPT_SAFE_UPLOAD')) {
if (isPostHasFile($value)) {
curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false);
$hadFile = true;
}
}
}
$tmpdatastr = (!$hadFile && is_array($postfields)) ? http_build_query($postfields) : $postfields;
curl_setopt($ch, CURLOPT_POSTFIELDS, $tmpdatastr);
}
break;
default:
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method); /* //设置请求方式 */
break;
}
$ssl = preg_match('/^https:\/\//i',$url) ? TRUE : FALSE;
curl_setopt($ch, CURLOPT_URL, $url);
if($ssl){
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); // 不从证书中检查SSL加密算法是否存在
}
$response = curl_exec($ch);
curl_close($ch);
if(empty($response)){
exit("错误请求");
}
return $response;
}
function isPostHasFile($value)
{
if (is_string($value) && strpos($value, '@') === 0 && is_file(realpath(ltrim($value, '@')))) {
return true;
}
return false;
}