PHP 生成订单号，GUID 方法
生成订单号function build_order_no() { <br>
return date('Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);<br>
}生成GUIDfunction guid() { <br>
if (function_exists('com_create_guid')) { <br>
return com_create_guid(); <br>
} else { <br>
mt_srand((double)microtime()*10000);<br>
$charid = strtoupper(md5(uniqid(rand(), true))); <br>
$hyphen = chr(45); <br>
$uuid = chr(123) <br>
.substr($charid, 0, 8).$hyphen <br>
.substr($charid, 8, 4).$hyphen <br>
.substr($charid,12, 4).$hyphen <br>
.substr($charid,16, 4).$hyphen <br>
.substr($charid,20,12) <br>
.chr(125);<br>
return $uuid; <br>
}<br>
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