sha1
sha1
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
sha1 — Calculate the sha1 hash of a string
It is not recommended to use this function to secure passwords, due to the fast nature of this hashing algorithm. See the Password Hashing FAQ for details and best practices.
Description
string sha1 ( string $str [, bool $raw_output = false ] )
Calculates the sha1 hash of str using the » US Secure Hash Algorithm 1.
Parameters
-
str -
The input string.
-
raw_output -
If the optional
raw_outputis set toTRUE, then the sha1 digest is instead returned in raw binary format with a length of 20, otherwise the returned value is a 40-character hexadecimal number.
Return Values
Returns the sha1 hash as a string.
Examples
Example #1 A sha1() example
<?php
$str = 'apple';
if (sha1($str) === 'd0be2dc421be4fcd0172e5afceea3970e2f3d940') {
echo "Would you like a green or red apple?";
}
?> See Also
- sha1_file() - Calculate the sha1 hash of a file
- crc32() - Calculates the crc32 polynomial of a string
- md5() - Calculate the md5 hash of a string
- hash() - Generate a hash value (message digest)
- crypt() - One-way string hashing
- password_hash() - Creates a password hash
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.sha1.php
