PHP generates random unique invitation code/discount code with fixed length
- 高洛峰Original
- 2016-10-14 10:29:101273browse
function make_coupon_card() {
$code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$rand = $code[rand(0,25)]
.strtoupper(dechex(date('m')))
.date('d').substr(time(),-5)
.substr(microtime(),2,5)
.sprintf('%02d',rand(0,99));
for(
$a = md5( $rand, true ),
$s = '0123456789ABCDEFGHIJKLMNOPQRSTUV',
$d = '',
$f = 0;
$f < 8;
$g = ord( $a[ $f ] ),
$d .= $s[ ( $g ^ ord( $a[ $f + 8 ] ) ) - $g & 0x1F ],
$f++
);
return $d;
}
echo make_coupon_card();
php generates a random unique invitation code/discount code, fixed length. Please indicate the source for reprinting: php generates a random unique invitation code/discount code, fixed length
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：The solution process for viewing garbled mysql data in phpmyadminNext article：The solution process for viewing garbled mysql data in phpmyadmin