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1 public function guid(){
2 //检测是否存在函数 3 if (function_exists('com_create_guid')){ 4 //创建全局唯一UUID标识. 5 return com_create_guid(); 6 } else { 7 //随机数生成器. php4.2.0以上版本支持. 8 mt_srand((double)microtime() * 10000); 9 //基于以微秒计的当前时间，生成一个唯一的 ID 10 $unid = uniqid(rand(), true); 11 //将字符串转换为大写. 12 $charid = strtoupper(md5( $unid )); 13 // 从指定的 ASCII 值返回字符 "-" 14 $hyphen = chr(45); 15 // 从指定的 ASCII 值返回字符 "{" 16 $uuid = chr(123).substr($charid, 0, 8) 17 .$hyphen.substr($charid, 8, 4) 18 .$hyphen.substr($charid,12, 4) 19 .$hyphen.substr($charid,16, 4) 20 .$hyphen.substr($charid,20,12) 21 .chr(125);// 从指定的 ASCII 值返回字符 "}" 22 return $uuid; 23 } 24 }
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2022-08-16
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2022-08-15
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