sha1

Description

Calculates the sha1 hash of str using the US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number. 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.

Example 1. A sha1() example <?php $str = 'apple';                       if (sha1($str) === 'd0be2dc421be4fcd0172e5afceea3970e2f3d940') {     echo "Would you like a green or red apple?";     exit; } ?>

See also sha1_file(), crc32(), and md5()