hash Generate a hash value (message digest)


hash

(PHP 5 >= 5.1.2, PECL hash >= 1.1)

hashGenerate a hash value (message digest)

说明

string hash ( string $algo , string $data [, bool $raw_output = false ] )

参数

algo

Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)

data

Message to be hashed.

raw_output

When set to TRUE, outputs raw binary data. 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 A hash() example

<?php
echo hash('ripemd160''The quick brown fox jumped over the lazy dog.');
?>

以上例程会输出:

ec457d0a974c48d5685a7efa03d137dc8bbde7e3

参见

  • hash_file() - Generate a hash value using the contents of a given file
  • hash_hmac() - Generate a keyed hash value using the HMAC method
  • hash_init() - Initialize an incremental hashing context
  • md5() - 计算字符串的 MD5 散列值
  • sha1() - 计算字符串的 sha1 散列值


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