php生成短网址|两种实现方式 无 ?php/** * Created by PhpStorm. * User: yangyulong/anziguoer@sina.com * Date: 2015/5/28 * Time: 15:55 */function shortUrl($url){ $base32 = array ( 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
php生成短网址|两种实现方式
<?php /** * Created by PhpStorm. * User: yangyulong/anziguoer@sina.com * Date: 2015/5/28 * Time: 15:55 */ function shortUrl($url){ $base32 = array ( 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5' ); $hex = md5($url); $hexLength = strlen($hex); $subHexLen = $hexLength / 8; $output = array(); for ($i = 0; $i < $subHexLen; $i++) { //每循环一次取到8位 $subHex = substr ($hex, $i * 8, 8); $int = 0x3FFFFFFF & (1 * ('0x'.$subHex)); $out = ''; for ($j = 0; $j < 6; $j++) { $val = 0x0000001F & $int; $out .= $base32[$val]; $int = $int >> 5; } $output[] = $out; } return $output; } function shortUrl2($url){ $result = sprintf("%u",crc32($url)); $show = ''; while($result >0){ $s = $result % 62; if($s > 35){ $s=chr($s+61); }elseif($s>9 && $s<=35){ $s=chr($s+55); } $show .= $s; $result = floor($result / 62); } return $show; } echo shortUrl2('http://baidu.com');