md5
(PHP 4, PHP 5, PECL hash:1.1-1.3)
md5 — Calculate the md5 hash of a string
说明
string md5
( string $str
[, bool $raw_output
] )
Calculates the MD5 hash of str using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.
参数
- str
-
The string.
- raw_output
-
If the optional raw_output is set to TRUE, then the md5 digest is instead returned in raw binary format with a length of 16. Defaults to FALSE.
返回值
Returns the hash as a 32-character hexadecimal number.
更新日志
| 版本 | 说明 |
|---|---|
| 5.0.0 | The raw_output parameter was added. |
范例
Example#1 A md5() example
<?php
$str = 'apple';
if (md5($str) === '1f3870be274f6c49b3e31a0c6728957f') {
echo "Would you like a green or red apple?";
exit;
}
?>