php文件上传,如何限制文件上传类型
发布时间：2020-12-13 21:28:06 所属栏目：PHP教程 来源：网络整理
导读：我有以下代码来检查(上传的简历和推荐信是否符合所需类型(pdf或doc或docx)和大小(小于400 kb) //check file extension and size $resume= ($_FILES['resume']['name']); $reference= ($_FILES['reference']['name']); $ext = strrchr($resume,"."); $ext1 =
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我有以下代码来检查(上传的简历和推荐信是否符合所需类型(pdf或doc或docx)和大小(小于400 kb)
//check file extension and size
$resume= ($_FILES['resume']['name']);
$reference= ($_FILES['reference']['name']);
$ext = strrchr($resume,".");
$ext1 = strrchr($reference,".");
if (!(($_FILES["resume"]["type"] == "application/doc")
|| ($_FILES["resume"]["type"] == "application/docx")
|| ($_FILES["resume"]["type"] == "application/pdf" ))
&& (($_FILES["reference"]["type"] == "application/doc")
|| ($_FILES["reference"]["type"] == "application/docx")
|| ($_FILES["reference"]["type"] == "application/pdf"))
&& (($ext == ".pdf") || ($ext == ".doc") || ($ext == ".docx"))
&& (($ext1 == ".pdf") || ($ext1 == ".doc") || ($ext1 == ".docx"))
&& ($_FILES["resume"]["size"] < 400000) //accept upto 500 kb
&& ($_FILES["reference"]["size"] < 400000)) {
stop user } else { allow files to upload }
这是不能正常工作,允许甚至txt文件通过大小限制不被检查,它有什么问题？ 谢谢, 解决方法
下面只使用mime类型来验证文件,然后检查两者的大小.有关大多数mime类型的列表,请参阅
here或google.
function allowed_file(){
//Add the allowed mime-type files to an 'allowed' array
$allowed = array('application/doc','application/pdf','another/type');
//Check uploaded file type is in the above array (therefore valid)
if(in_array($_FILES['resume']['type'],$allowed) AND in_array($_FILES['reference']['type'],$allowed)){
//If filetypes allowed types are found,continue to check filesize:
if($_FILES["resume"]["size"] < 400000 AND $_FILES["reference"]["size"] < 400000 ){
//if both files are below given size limit,allow upload
//Begin filemove here....
}
}
}
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