base64实现图片多图上传功能

function webPic_upload($savepath,$url_data){
$mark=ture;
???$pic_url=‘‘;
???if(is_array($url_data)){
???????foreach ($url_data as $k => $v) {
???????????$url=$v;
???????????preg_match(‘/^data:image\/(\w+);base64/‘, $url, $out);//去除前端base64编码开头的base64字符
???????????$data = base64_decode(str_replace($out[0], ‘‘, $url));
???????????$pic=$time（）.$k.‘.‘.$out[1];
???????????$savePath = R_P . $savepath; //文件保存路径
???????????$savePath2=$savePath . $pic;//文件全路径
???????????$savePath3=$savepath . $pic;//用于保存数据库的字段值
?????????if(!is_dir($savePath)) {//图片保存路径不存在创建文件夹
???????????????// 检查目录是否编码后的
???????????????if(is_dir(base64_decode($savePath))) {
???????????????????$savePath = base64_decode($savePath);
???????????????}else{
???????????????????// 尝试创建目录
???????????????????if(!mkdir($savePath,0777,true)){
????????????????????$ret[‘code‘] = 1;
????????????????????$ret[‘msg‘] =‘创建‘.$savePath.‘文件失败‘;
?????????????????????return_result($request, $response, $ret); ??
???????????????????}
???????????????}
???????????}else {
???????????????if(!is_writeable($savePath)) {
?????????????????????$ret[‘code‘] = 1;
?????????????????????$ret[‘msg‘] =$savePath.‘文件夹不可写入‘;
?????????????????????return_result($request, $response, $ret); ??
???????????????}
???????????}
??????????if(file_put_contents($savePath2, $data)){
???????????????$pic_url=$pic_url.‘,‘.$savePath3; //拼接图片字符串
?????????????}else{
???????????????$mark=false;break;
?????????????}
???????}
???????if($mark){
?????????$res=ltrim($pic_url,‘,‘);
?????????return $res;//返回图片字符串，应用的改函数的进行处理
???????????}
???}else{
?????????$ret[‘code‘] = 1;
?????????$ret[‘msg‘] = ‘店铺图片处理失败‘;
?????????return_result($request, $response, $ret);
???????}
}