SHA1(3) 1 SHA1(3)
sha1 - Calculate the sha1 hash of a string
SYNOPSIS
string sha1 (string $str, [bool $raw_output = false])
DESCRIPTION
Calculates the sha1 hash of $str using the US Secure Hash Algorithm 1.
PARAMETERS
o $str
- The input string.
o $raw_output
- If the optional $raw_output is set to TRUE, 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(3) example
<?php
$str = 'apple';
if (sha1($str) === 'd0be2dc421be4fcd0172e5afceea3970e2f3d940') {
echo "Would you like a green or red apple?";
}
?>
NOTES
Note
Secure password hashing
It is not recommended to use this function to secure passwords, due to the fast nature of this hashing algorithm. See here for
details.
SEE ALSO
sha1_file(3), crc32(3), md5(3), hash(3), crypt(3), password_hash(3).
PHP Documentation Group SHA1(3)