Strings
PHP Manual

md5_file

(PHP 4 >= 4.2.0, PHP 5, PECL hash:1.1-1.3)

md5_file — Calculates the md5 hash of a given file

说明

string md5_file ( string $filename [, bool $raw_output ] )

Calculates the MD5 hash of the file specified by the filename parameter using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash. The hash is a 32-character hexadecimal number.

参数

filename

The filename

raw_output

When TRUE, returns the digest in raw binary format with a length of 16. Defaults to FALSE.

返回值

Returns a string on success, FALSE otherwise.

更新日志

版本 说明
5.0.0 Added the raw_output parameter
5.1.0 Changed the function to use the streams API. It means that you can use it with wrappers, like md5_file('http://example.com/..')

参见


Strings
PHP Manual