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我有当图像被粘贴到一个CONTENTEDITABLE场检测的JavaScript代码:文件扩展名
$image = $_FILES['newImage'];
$imageFileType = pathinfo($image["name"],PATHINFO_EXTENSION); // obviously doesn't work
$imageId = new ImageId();
$imageName = $imageId.".".$imageFileType;
// [... some checks on the file ...]
$targetFile = "../../images/uploads/{$imageName}";
if($imageOK && move_uploaded_file($image["tmp_name"],$targetFile)){
//[ do stuff ]
:接收用于图像POST请求
document.onpaste = function(event){
var items=(event.clipboardData || event.originalEvent.clipboardData || event.dataTransfer).items;
for(i in items){
var item=items[i];
if(item.kind==='file' && ~item.type.indexOf("image")){ //is file and is image
event.preventDefault();
var blob=item.getAsFile();
console.log(item, blob);
var data=new FormData();
data.append('fname','imageFromClipboard'); //extension for file name??
data.append('newImage',blob);
sendImage(data); //just a $.POST request
}
}
}
和PHP代码如何可靠地从blob获取文件扩展名?我应该用JS还是PHP来做?是否所有可能的图像文件类型只是在斜线处分割MIME类型(例如“image/png”)并将其用作扩展名?