How to get the mime type of a file

[jordanwb]

I'm making my own proxy using PHP and want to do is able to output a jpeg file (example) or another format using the header command. What I'd like to know is how to get the mime type of a file.

[toplay]

New way:

 

http://us2.php.net/manual/en/function.finfo-file.php

 

http://us2.php.net/manual/en/ref.fileinfo.php

 

 

Old way:

 

http://us2.php.net/manual/en/function.mime-content-type.php

 

 

[jordanwb]

I tried the first one using a function that was created by someone there and I get this error:

 

Fatal error: Call to undefined function finfo_open() in D:\xampp\htdocs\jproxy\includes\file_parser.php on line 31

 

For mime_content_type I don't get any results:

 

function output ()
{
$num_lines = count ($this->html);
$mime_type = mime_content_type ($this->file);
print $mime_type;
//header("Content-type:".$mime_type);
//print_r ($this->html);
}

 

$this->file is created in the constructor and the path is correct. Perhaps mime_content_type doesn't work with files that are on another server?

[MadTechie]

<?php
function output ()
{
$num_lines = count ($this->html);

$finfo = finfo_open(FILEINFO_MIME); 
$mime_type = finfo_file($finfo, $this->file);
finfo_close($finfo);

print $mime_type;
//header("Content-type:".$mime_type);
//print_r ($this->html);
}
?>

[toplay]

You have to have it installed and that's why I gave you this link with installation instructions: http://us2.php.net/manual/en/ref.fileinfo.php

 

The other function as per docs state that magic.mime file is needed/used.

 

The code example in the manual shows specifying a path and not a URL, so I don't think you can get the mime type from another server if that's what you're trying to do.

 

 

[MadTechie]

Ahh remote file.. i guess one option would be using sockets..

[jordanwb]

What about determining the mime type based on the extension? I've heard that it may not always be reliable.

[jordanwb]

Hello?

[roopurt18]

What about determining the mime type based on the extension? I've heard that it may not always be reliable.

That is correct, it is not reliable.