<?php |
$randStr = '' ; |
$ychar = "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z" ; |
$list = explode ( "," , $ychar ); //分割函数 |
for ( $i =0; $i <4; $i ++){ //4位长度 |
$randnum =rand(0,35); |
$randStr .= $list [ $randnum ]; |
} |
echo $randStr ; |