How to get MIME type of a file in PHP 5.5?

Question

I am using mime_content_type() in PHP 5.5 to get a MIME type, but it throws fatal: error function not found.

How can I achieve this on PHP

Answer 1

Get the image size using:

$infFil=getimagesize($the_file_name);

and

echo $infFil["mime"]

The getimagesize returns an associative array which have a MIME key and obviously the image size too

I used it and it works

Answer 2

$finfo = finfo_open(FILEINFO_MIME_TYPE); should do it.

Taken from the php.net docs. Your function is deprecated and probably already removed.

http://www.php.net/manual/en/function.finfo-file.php

Answer 3

Make use of the finfo() functions.

A simple illustration:

<?php
$finfo = finfo_open(FILEINFO_MIME_TYPE);
echo finfo_file($finfo, "path/to/image_dir/image.gif");
finfo_close($finfo);

OUTPUT :

image/gif

^{Note : Windows users must include the bundled php_fileinfo.dll DLL file in php.ini to enable this extension.}

Answer 4

You should understand that file_get_contents will upload whole file to the memory, it is not good way to get only mime type. You don't need to use buffer method and file_get_contents function in this case.

To prevent any errors and warnings, better do like this.

$filename = 'path to your file';

if (class_exists('finfo')) {
    $finfo = new finfo(FILEINFO_MIME_TYPE);
    if (is_object($finfo)) {
        echo $finfo->file($filename);
    }
} else {
    echo 'fileinfo did not installed';
}

Also you should know $finfo->file will throw PHP Warning if it fail.

If fileinfo is not installed properly, and you have a fresh version of PHP, you can get mime type from headers.

You can use cURL to get mime type from headers.

    $ch = curl_init();
    curl_setopt_array($ch, array(
            CURLOPT_HEADER => true,
            CURLOPT_NOBODY => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_MAXREDIRS => 1,
            CURLOPT_URL => $link)
    );

    $headers = curl_exec($ch);
    curl_close($ch);

    if (preg_match('/Content-Type:\s(.*)/i', $headers, $matches)) {
        echo trim($matches[1], "\t\n\r");
    }else {
        echo 'There is no content type in the headers!';
    }

Also you can use get_headers function, but it more slow than cURL request.

$url = 'http://www.example.com';

$headers = get_headers($url, 1);

echo $headers['Content-Type'];

Answer 5

mime_content_type() is not deprecated and works fine.

Why is mime_content_type() deprecated in PHP?

http://php.net/manual/en/function.mime-content-type.php

As of PHP 5.3, it's even built-in.

Answer 6

I use the MimeTypeTool from Bat (https://github.com/lingtalfi/Bat)

It uses fileinfo if available, and defaults back to an "extension => mime type" mapping otherwise.