php中如何生成uuid,生存uuid的方法。
代码如下:
function guid(){if (function_exists('com_create_guid')){return com_create_guid();}else{mt_srand((double)microtime()*10000);//optional for php 4.2.0 and up.$charid = strtoupper(md5(uniqid(rand(), true)));$hyphen = chr(45);// "-"$uuid = chr(123)// "{".substr($charid, 0, 8).$hyphen.substr($charid, 8, 4).$hyphen.substr($charid,12, 4).$hyphen.substr($charid,16, 4).$hyphen.substr($charid,20,12).chr(125);// "}"return $uuid;}}
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