(PHP >= 5.3.0, PHP 7, PHP 8, PECL fileinfo >= 0.1.0)
finfo_open -- finfo::__construct — Create a new finfo instance
Procedural style
Object-oriented style (constructor):
This function opens a magic database and returns its instance.
flagsOne or disjunction of more Fileinfo constants.
magic_database
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.
| Version | Description |
|---|---|
| 8.1.0 | Returns an finfo instance now; previously, a resource was returned. |
| 8.0.3 |
magic_database is nullable now.
|
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
Note:
Generally, using the bundled magic database (by leaving
magic_databaseand theMAGICenvironment variables unset) is the best course of action unless you specifically need a custom magic database.