2019独角兽企业重金招聘Python工程师标准>>> 
public function createstr( $length ) {$chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str ="";for ( $i = 0; $i < $length; $i++ ) { $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1); } return $str;}
转载于:https://my.oschina.net/guodingding/blog/718872
