finfo_file

finfo::file

(PHP >= 5.3.0, PECL fileinfo >= 0.1.0)

finfo_file -- finfo::file — Return information about a file

说明

过程化风格

string finfo_file ( resource $finfo , string $file_name = NULL [, int $options = FILEINFO_NONE [, resource $context = NULL ]] )

面向对象风格

public string finfo::file ( string $file_name = NULL [, int $options = FILEINFO_NONE [, resource $context = NULL ]] )

This function is used to get information about a file.

参数

finfo: Fileinfo resource returned by finfo_open().
file_name: Name of a file to be checked.
options: One or disjunction of more Fileinfo constants.
context: For a description of contexts, refer to Stream 函数.

返回值

Returns a textual description of the contents of the filename argument, or FALSE if an error occurred.

范例

Example #1 A finfo_file() example


<?php
$finfo = finfo_open(FILEINFO_MIME_TYPE); // return mime type ala mimetype extension
foreach (glob("*") as $filename) {
    echo finfo_file($finfo, $filename) . "\n";
}
finfo_close($finfo);
?>

以上例程的输出类似于：

text/html
image/gif
application/vnd.ms-excel

参见

finfo_buffer() - Return information about a string buffer