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;} |
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