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This article mainly explains the "php does not get the file type through the suffix", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "php does not get the file type through the suffix" bar!

The method of getting the file type: 1, use the "$_ FILES ['uploadfile'] [' type']" statement; 2, use the "finfo_file (finfo_open (FILEINFO_MIME), file path)" statement; 3, judge by reading the first six bytes of the file.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php gets the file type (without suffixes)

Method 1:$_FILES

If the file is uploaded by php, you can use $_ FILES ['uploadfile'] [' type'] to get the file type, but it also has the same problem as pathinfo, this method can only determine the file type based on the file suffix.

Method 2:php Fileinfo to get the file MIME type (finfo_open)

Code example:

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