(PHP >= 5.3.0, PHP 7, PHP 8, PECL fileinfo >= 0.1.0)
finfo_open -- finfo::__construct — Create a new finfo instance
Stile procedurale
Stile orientato agli oggetti (constructor):
This function opens a magic database and returns its instance.
flags
One 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.
(Procedural style only)
Returns an finfo instance on success, o false
in caso di fallimento.
Versione | Descrizione |
---|---|
8.1.0 | Returns an finfo instance now; previously, a resource was returned. |
8.0.3 |
magic_database is nullable now.
|
Example #1 Stile orientato agli oggetti
<?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 Stile procedurale
<?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);
?>
Il precedente esempio visualizzerà:
text/plain; charset=us-ascii
Nota:
Generally, using the bundled magic database (by leaving
magic_database
and theMAGIC
environment variables unset) is the best course of action unless you specifically need a custom magic database.