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finfo_open

(PECL)

finfo_open

(no version information, might be only in CVS)

finfo->__construct() -- Create a new fileinfo resource

说明

Procedural style

resource finfo_open ( [int options [, string arg]] )

Object oriented style (constructor):

class finfo {

__construct ( [int options [, string magic_file]] )

}

This function opens a magic database and returns its resource.

参数

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 this variable is not set either, /usr/share/misc/magic is used by default. A .mime and/or .mgc suffix is added if needed.

返回值

Returns a magic database resource on success or FALSE on failure.

范例

例 1. Object oriented style

<?php
$finfo = new finfo(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 $finfo->file($filename);

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

例 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);
?>

上例将输出：

text/plain

参见

finfo_close()



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