PHP5中文手册·Generate a hash value using the contents of a given file -- 追寻梦想＞编程乐园＞PHP 编程

说明

string hash_file ( string $algo , string $filename [, bool $raw_output ] )

参数

algo: Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
filename: URL describing location of file to be hashed; Supports fopen wrappers.
raw_output: When set to TRUE, outputs raw binary data. Default value (FALSE) outputs lowercase hexits.

返回值

Returns a string containing the calculated message digest as lowercase hexits unless raw_output is set to true in which case the raw binary representation of the message digest is returned.

范例

Example#1 Using hash_file()


<?php
/* Create a file to calculate hash of */
file_put_contents('example.txt', 'The quick brown fox jumped over the lazy dog.');

echo hash_file('md5', 'example.txt');
?>

上例将输出：

5c6ffbdd40d9556b73a21e63c3e0e904


	PHP5中文手册 hash_algos hash_final hash PHP Manual hash_file (PHP 5 >= 5.1.2, PECL hash:1.1-1.5) hash_file — Generate a hash value using the contents of a given file 说明 string hash_file ( string `$algo` , string `$filename` [, bool `$raw_output` ] ) 参数 `algo` Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..) `filename` URL describing location of file to be hashed; Supports fopen wrappers. `raw_output` When set to `TRUE`, outputs raw binary data. Default value (`FALSE`) outputs lowercase hexits. 返回值 Returns a string containing the calculated message digest as lowercase hexits unless `raw_output` is set to true in which case the raw binary representation of the message digest is returned. 范例 Example#1 Using hash_file() `<?php /* Create a file to calculate hash of */ file_put_contents('example.txt', 'The quick brown fox jumped over the lazy dog.'); echo hash_file('md5', 'example.txt'); ?>` 上例将输出： 5c6ffbdd40d9556b73a21e63c3e0e904 参见 hash() hash_hmac_file() hash_update_file() hash_algos hash_final hash PHP Manual

hash_file

说明

参数

返回值

范例

参见