php生成唯一识别码uuid

/*生成唯一标志
*标准的UUID格式为:xxxxxxxx-xxxx-xxxx-xxxxxx-xxxxxxxxxx(8-4-4-4-12)
*/

function
uuid() { $chars = md5(uniqid(mt_rand(), true)); $uuid = substr ( $chars, 0, 8 ) . '-' . substr ( $chars, 8, 4 ) . '-' . substr ( $chars, 12, 4 ) . '-' . substr ( $chars, 16, 4 ) . '-' . substr ( $chars, 20, 12 ); return $uuid ; } echo uuid(); //Returns like 'dba5ce3e-430f-cf1f-8443-9b337cb5f7db'

 

转载于:https://www.cnblogs.com/tine/p/9316509.html

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