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Homephp教程php手册18位不重复订单号

18位不重复订单号
/**<br> *   生成10位绝不重复订单号<br> */<br> function order_number(){<br>     static $ORDERSN=array();                                        //静态变量<br>     $ors=date('ymd').substr(time(),-5).substr(microtime(),2,5);     //生成16位数字基本号<br>     if (isset($ORDERSN[$ors])) {                                    //判断是否有基本订单号<br>         $ORDERSN[$ors]++;                                           //如果存在,将值自增1<br>     }else{<br>         $ORDERSN[$ors]=1;<br>     }<br>     return $ors.str_pad($ORDERSN[$ors],2,'0',STR_PAD_LEFT);     //链接字符串<br> }暂时只测试了本地,如果需要多并发,可以考虑将静态变量变为静态缓存判断

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