PHP7基于curl实现的上传图片功能

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); ?>

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