//设置数据格式-- json
header('content-type:application/json;charset=utf-8');
// *代表允许任何网址请求
header('Access-Control-Allow-Origin:*');
// 允许请求的类型
header('Access-Control-Allow-Methods:POST,GET,OPTIONS,DELETE');
// 设置允许任何请求头的字段
header('Access-Control-Allow-Headers:*');
//屏蔽参数为空警告
error_reporting(0);
$url = isset($_POST['url']) ? $_POST['url'] : ''; //图片下载url
if ($url == '') {
$res = array('code' => '0', 'msg' => '参数错误');
exit(json_encode($res));
} else {
getImage($url, $save_dir = '../assets/img', $filename = '', $type = 0);
}
/*
*功能:php完美实现下载远程图片保存到本地
*参数:文件url,保存文件目录,保存文件名称,使用的下载方式
*当保存文件名称为空时则使用远程文件原来的名称
*/
function getImage($url, $save_dir, $filename, $type = 0)
{
if (trim($save_dir) == '') {
$save_dir = './';
}
if (trim($filename) == '') { //保存文件名
$ext = strrchr($url, '.');
if ($ext != '.gif' && $ext != '.jpg' && $ext != '.jpge' && $ext != '.png') {
$res = array('code' => '0', 'msg' => '格式错误');
exit(json_encode($res));
}
$filename = time() . $ext;
}
if (0 !== strrpos($save_dir, '/')) {
$save_dir .= '/';
}
//创建保存目录
if (!file_exists($save_dir) && !mkdir($save_dir, 0777, true)) {
$res = array('code' => '0', 'msg' => '目录权限错误');
exit(json_encode($res));
}
//获取远程文件所采用的方法
if ($type) {
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$img = curl_exec($ch);
curl_close($ch);
} else {
ob_start();
readfile($url);
$img = ob_get_contents();
ob_end_clean();
}
//$size=strlen($img);
//文件大小
$fp2 = @fopen($save_dir . $filename, 'a');
fwrite($fp2, $img);
fclose($fp2);
unset($img, $url);
$res = array('link' => 'http://localhost/api/assets/img/' . $filename);
exit(json_encode($res));
}
作者:amao