-
-
/**
- * 进制转换：十进制、三十六进制转换
- * by bbs.it-home.org
- */
- $dic = array(
- 0 => '0', 1 => '1', 2 => '2', 3 => '3', 4 => '4', 5 => '5', 6 => '6', 7 => '7', 8 => '8', 9 => '9',
- 10 => 'A', 11 => 'B', 12 => 'C', 13 => 'D', 14 => 'E', 15 => 'F', 16 => 'G', 17 => 'H', 18 => 'I',
- 19 => 'J', 20 => 'K', 21 => 'L', 22 => 'M', 23 => 'N', 24 => 'O', 25 => 'P', 26 => 'Q', 27 => 'R',
- 28 => 'S', 29 => 'T', 30 => 'U', 31 => 'V', 32 => 'W', 33 => 'X', 34 => 'Y', 35 => 'Z'
- );
-
- //十进制转换三十六进制
- function enid($int, $format = 8) {
- global $dic;
- $arr = array();
- $loop = true;
- while ($loop)
- {
- $arr[] = $dic[bcmod($int, 36)];
- $int = floor(bcdiv($int, 36));
- if ($int == 0) {
- $loop = false;
- }
- }
- array_pad($arr, $format, $dic[0]);
- return implode('', array_reverse($arr));
- }
-
- //三十六进制转换十进制
- function deid($id) {
- global $dic;
- // 键值交换
- $dedic = array_flip($dic);
- // 去零
- $id = ltrim($id, $dic[0]);
- // 反转
- $id = strrev($id);
- $v = 0;
- for($i = 0, $j = strlen($id); $i {
- $v = bcadd(bcmul($dedic[$id{$i}] , bcpow(36, $i)) , $v);
- }
- return $v;
- }
-
- // 遍历三位所有的三十六进制数
- $i = deid('ZZZ');
- $b = array();
- while ($i > 0) {
- $id_dym = str_pad(enid($i), 3, 0, STR_PAD_LEFT);
- echo strtolower($id_dym), '
';
- $i--;
- }
|
324
收藏
