PHP file upload type suffix corresponding to mine comparison table_PHP tutorial

When uploading files or pictures in PHP, we will encounter the need to limit the type of uploaded files. If we only limit the suffix name, it is easy to bypass it. Below I have found some suffix names corresponding to the mine comparison table. I hope Helpful to everyone.

When using a PHP script to upload files, you need to process the file format into a file type recognized by PHP, for example (the file format of .jpg is image/jpeg). The judgment of this format is first done by the browser. The browser determines that it is a certain type of file through the submission of the form, and then submits it to PHP for processing.

Sometimes different browsers have different definitions of file types, so sometimes you need to make judgments about different browsers. In fact, different browser types can be added to the judgment.

The following provides a file type comparison table between IE and Firefox:

ie

Firefox

id	Suffix	File type recognized by php
0	gif	image/gif
1	jpg	image/jpeg
2	png	image/png
3	bmp	image/bmp
4	psd	application/octet-stream
5	ico	image/x-icon
6	rar	application/octet-stream
7	zip	application/zip
8	7z	application/octet-stream
9	exe	application/octet-stream
10	avi	video/avi
11	rmvb	application/vnd.rn-realmedia-vbr
12	3gp	application/octet-stream
13	flv	application/octet-stream
14	mp3	audio/mpeg
15	wav	audio/wav
16	krc	application/octet-stream
17	lrc	application/octet-stream
18	txt	text/plain
19	doc	application/msword
20	xls	application/vnd.ms-excel
21	ppt	application/vnd.ms-powerpoint
22	pdf	application/pdf
23	chm	application/octet-stream
24	mdb	application/msaccess
25	sql	application/octet-stream
26	con	application/octet-stream
27	log	text/plain
28	dat	application/octet-stream
29	ini	application/octet-stream
30	php	application/octet-stream
31	html	text/html
32	htm	text/html
33	ttf	application/octet-stream
34	fon	application/octet-stream
35	js	application/x-javascript
36	xml	text/xml
37	dll	application/octet-stream
38	dll	application/octet-stream

id	Suffix	File type recognized by php
0	gif	image/gif
1	jpg	image/pjpeg
2	png	image/x-png
3	bmp	image/bmp
4	psd	application/octet-stream
5	ico	image/x-icon
6	rar	application/octet-stream
7	zip	application/x-zip-compressed
8	7z	application/octet-stream
9	exe	application/octet-stream
10	avi	video/avi
11	rmvb	application/vnd.rn-realmedia-vbr
12	3gp	application/octet-stream
13	flv	application/octet-stream
14	mp3	audio/mpeg
15	wav	audio/wav
16	krc	application/octet-stream
17	lrc	application/octet-stream
18	txt	text/plain
19	doc	application/msword
20	xls	application/vnd.ms-excel
21	ppt	application/vnd.ms-powerpoint
22	pdf	application/pdf
23	chm	application/octet-stream
24	mdb	application/msaccess
25	sql	text/plain
26	con	application/octet-stream
27	log	text/plain
28	dat	text/plain
29	ini	application/octet-stream
30	php	application/octet-stream
31	html	text/html
32	htm	text/html
33	ttf	application/octet-stream
34	fon	application/octet-stream
35	js	text/html
36	xml	text/xml
37	dll	application/octet-stream
38	class	application/java

 

下面看一个实例

代码如下

复制代码

$temppath=$upfile['tmp_name'];    $fileinfo=pathinfo($upfile['name']);    $extension=$upfile['type'];    //echo $extension;    //exit;    switch( $extension )    {     case 'application/msword':     $extension ='doc';     break;     case 'application/vnd.ms-excel':     $extension ='xls';     break;     case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':     $extension ='docx';     break;     case 'application/vnd.ms-powerpoint':     $extension ='ppt';     break;     case 'application/pdf':     $extension ='pdf';     break;     case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':     $extension ='xlsx';     break;     default:     die('只允许上传doc,docx,xls,pdf,ppt文件 重新上传');        }

 代码如下

复制代码 $temppath=$upfile['tmp_name'];
   $fileinfo=pathinfo($upfile['name']);
   $extension=$upfile['type'];
   //echo $extension;
   //exit;
   switch( $extension )
   {
    case 'application/msword':
    $extension ='doc';
    break;
    case 'application/vnd.ms-excel':
    $extension ='xls';
    break;
    case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':
    $extension ='docx';
    break;
    case 'application/vnd.ms-powerpoint':
    $extension ='ppt';
    break;
    case 'application/pdf':
    $extension ='pdf';
    break;
    case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':
    $extension ='xlsx';
    break;
    default:
    die('只允许上传doc,docx,xls,pdf,ppt文件 重新上传');
   
   } 上面实例就限制了只能上传doc,docx,xls,pdf,ppt了，这样如果有人想利用后缀名上传其它如php或asp文件就存在会提示上传文件不合法。

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