本文实例讲述了PHP7基于curl实现的上传图片功能。分享给大家供大家参考，具体如下：
根据php版本不同，curl模拟表单上传的方法不同
php5.5之前
$curl = curl_init();
if (defined('CURLOPT_SAFE_UPLOAD')) {
curl_setopt($curl, CURLOPT_SAFE_UPLOAD, false);
}
$data = array('file' => '@' . realpath($path));//‘@' 符号告诉服务器为上传资源
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, 1 );
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_USERAGENT,"TEST");
$result = curl_exec($curl);
$error = curl_error($curl);
php5.5之后，到php7
$curl = curl_init();
curl_setopt($curl, CURLOPT_SAFE_UPLOAD, true);
$data = array('file' => new \CURLFile(realpath($path)));
url_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, 1 );
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_USERAGENT,"TEST");
$result = curl_exec($curl);
$error = curl_error($curl);
下面提供一个兼容的方法：
$curl = curl_init();
if (class_exists('\CURLFile')) {
curl_setopt($curl, CURLOPT_SAFE_UPLOAD, true);
$data = array('file' => new \CURLFile(realpath($path)));//>=5.5
} else {
if (defined('CURLOPT_SAFE_UPLOAD')) {
curl_setopt($curl, CURLOPT_SAFE_UPLOAD, false);
}
$data = array('file' => '@' . realpath($path));//<=5.5
}
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, 1 );
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_USERAGENT,"TEST");
$result = curl_exec($curl);
$error = curl_error($curl);
其中：
$path：为待上传的图片地址
$url：目标服务器地址
例如
$url="http://localhost/upload.php"; $path = "/bg_right.jpg"
upload.php示例：
<?php file_put_contents(time().".json", json_encode($_FILES)); $tmp_name = $_FILES['file']['tmp_name']; $name = $_FILES['file']['name']; move_uploaded_file($tmp_name,'audit/'.$name); ?>
希望本文所述对大家PHP程序设计有所帮助。
