Detect MIME Content type of a File in PHP

PHP inbuilt function mime_content_type() has been deprecated and PECL extension Fileinfo provides the same functionality to detect MIME content type of a file, Lets create a simple PHP function to detect MIME content type of a file. Click here to know about MIME type of a file.

PHP Function

<?php

if(!function_exists('mime_content_type')) {
function mime_content_type($filename) {
$mime_types = array(
'txt' => 'Text File',
'htm' => 'HTML File',
'html' => 'HTML File',
'php' => 'PHP File',
'css' => 'CSS File',
'js' => 'JavaScript File',
'json' => 'JSON File',
'xml' => 'XML File ',
'swf' => 'Shockwave Flash File',
'flv' => 'FLV Video',
'htaccess' => 'HTACCESS File',
'htpasswd' => 'HTPASSWORD File',

'ini' => 'INI File',

// images
'png' => 'PNG Image',
'jpe' => 'JPEG Image',
'jpeg' => 'JPEG Image',
'jpg' => 'JPEG Image',
'gif' => 'GIF Image',
'bmp' => 'BMP Image',
'psd' => 'PHOTOSHOP Files',
'PDF' => 'PDF Files',
'ico' => 'ICON File',
'tiff' => 'TIFF Image',
'tif' => 'TIFF Image',
'svg' => 'SVG File',
'svgz' => 'SVG File',

// archives
'zip' => 'ZIP File',
'rar' => 'RAR File',
'exe' => 'EXE Files',
'msi' => 'MSI Files',
'cab' => 'CAB Files',

// audio/video
'mp3' => 'audio/mpeg',
'qt' => 'video/quicktime',
'mov' => 'video/quicktime',

// adobe
'pdf' => 'application/pdf',
'psd' => 'image/vnd.adobe.photoshop',
'ai' => 'application/postscript',
'eps' => 'application/postscript',
'ps' => 'application/postscript',

// ms office
'doc' => 'MS WORD File',
'docx' => 'MSWORD File',
'rtf' => 'RTF File',
'xls' => 'MS EXCEL File',
'ppt' => 'MS POWER POINT File',
'xlsx' => 'MS EXCEL File',
'pptx' => 'MS POWER POINT File',

// open office
'odt' => 'application/vnd.oasis.opendocument.text',
'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
);


$ext = strtolower(array_pop(explode('.',$filename)));

if (function_exists("finfo_file")) {
$finfo = finfo_open(FILEINFO_MIME, "/usr/share/misc/magic");
if ($finfo) {
return finfo_file($finfo, $filename);

}else{
if(array_key_exists($ext, $mime_types)){
return $mime_types[$ext]; 
}
}
@finfo_close($finfo);
}elseif (array_key_exists($ext, $mime_types)) {
return $mime_types[$ext];
}
else {
return 'application/octet-stream';
}

}
}
?>

Call in Action

<?php
  $fileName = "myFile.php";
  echo mime_content_type($fileName);
?>