php man page for finfo_open

FINFO_OPEN(3)								 1							     FINFO_OPEN(3)

finfo_open - Create a new fileinfo resource

       Procedural style

SYNOPSIS
       resource finfo_open NULL ([int  $options = FILEINFO_NONE], [string  $magic_file])

DESCRIPTION
       Object oriented style (constructor): finfo::__construct NULL ([int  $options = FILEINFO_NONE], [string  $magic_file])

	This function opens a magic database and returns its resource.

PARAMETERS
	      o $options
		- One or disjunction of more Fileinfo constants.

	      o $magic_file
		-  Name  of a magic database file, usually something like /path/to/magic.mime. If not specified, the MAGIC environment variable is
		used. If the environment variable isn't set, then PHP's bundled magic database will be used.  Passing NULL or an empty string will
		be equivalent to the default value.

RETURN VALUES
	(Procedural style only) Returns a magic database resource on success or FALSE on failure.

NOTES
       Warning

	       The  expected  magic  database  format changed in PHP 5.3.11 and 5.4.1. Due to this, the internal magic database was upgraded. This
	      mostly effects code where an external magic database is used: reading an older magic file will now fail. Also, some  textual  repre-
	      sentations  of  the  mime  types	has  changed,  for instance for PHP would be "PHP script, ASCII text" instead of "PHP script text"
	      returned.

       Note

	       Generally, using the bundled magic database (by leaving $magic_file and the MAGIC environment variables unset) is the  best  course
	      of action unless you specifically need a custom magic database.

EXAMPLES
       Example #1

	      Object oriented style

	      <?php
	      $finfo = new finfo(FILEINFO_MIME, "/usr/share/misc/magic"); // return mime type ala mimetype extension

	      /* get mime-type for a specific file */
	      $filename = "/usr/local/something.txt";
	      echo $finfo->file($filename);

	      ?>

       Example #2

	      Procedural style

	      <?php
	      $finfo = finfo_open(FILEINFO_MIME, "/usr/share/misc/magic"); // return mime type ala mimetype extension

	      if (!$finfo) {
		  echo "Opening fileinfo database failed";
		  exit();
	      }

	      /* get mime-type for a specific file */
	      $filename = "/usr/local/something.txt";
	      echo finfo_file($finfo, $filename);

	      /* close connection */
	      finfo_close($finfo);
	      ?>

       The above example will output:

       text/plain; charset=us-ascii

SEE ALSO
       finfo_close(3).

PHP Documentation Group 													     FINFO_OPEN(3)