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finfo_open
finfo::__construct
(PHP >= 5.3.0, PECL fileinfo >= 0.1.0)
finfo_open -- finfo::__construct — Create a new fileinfo resource
Description
Procedural style
$options = FILEINFO_NONE
[, string $magic_file = NULL
]] ) : resourceObject oriented style (constructor):
This function opens a magic database and returns its resource.
Parameters
-
options -
One or disjunction of more Fileinfo constants.
-
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
NULLor 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
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 representations 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_fileand 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
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.finfo-open.html
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References
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