How to get file mime type in php

php method to get the file mime type

1. Use the mime_content_type method

string mime_content_type ( string $filename )
Returns the MIME content type for a file as determined by using information from the magic.mime file. 

<?php
$mime_type = mime_content_type(&#39;1.jpg&#39;);
echo $mime_type; // image/jpeg
?>

2. Use Fileinfo method (official recommendation)

Using fileinfo requires installing the php_fileinfo extension.

If it has been installed, it can be found in the extension_dir directory php_fileinfo.dll(windows), fileinfo.so(linux)

Open php.ini and change the " in front of extension=php_fileinfo.dll ;"Remove it and restart apache.

<?php
$fi = new finfo(FILEINFO_MIME_TYPE);
$mime_type = $fi->file('1.jpg');
echo $mime_type; // image/jpeg
?>

Using the exif_imagetype method requires installing the php_exif extension and the php_mbstring extension

If it has been installed, it can be in the extension_dir directory Find php_exif.dll(windows),exif.so(linux)

Open php.ini, remove the "," before extension=php_mbstring.dll, extension=php_exif.dll, and then restart apache

<?php
$image = exif_imagetype(&#39;1.jpg&#39;);
$mime_type = image_type_to_mime_type($image);
echo $mime_type; // image/jpeg
?>

The above introduces the method of obtaining the mime type of the file in PHP, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.