[英]PHP Ticket ID Generation
I am creating a ticket system for learning purposes, and I was wondering how would I create a simple unique ticket ID that would be similiar to this: gD8f-jxS
我正在创建一个用于学习目的的票务系统,我想知道如何创建一个与此相似的简单唯一票证ID:
gD8f-jxS
It would have 4 characters of random case in the first part 在第一部分中它将有4个随机大小写的字符
(letters and numbers are allowed, then it would have a dash, and again 3 random letters or numbers of any case. (允许使用字母和数字,然后会有破折号,再加上3个随机字母或数字)。
public function generateCode(){
$unique = FALSE;
$length = 7;
$chrDb = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9');
while (!$unique){
$str = '';
for ($count = 0; $count < $length; $count++){
$chr = $chrDb[rand(0,count($chrDb)-1)];
if (rand(0,1) == 0){
$chr = strtolower($chr);
}
if (3 == $count){
$str .= '-';
}
$str .= $chr;
}
/* check if unique */
//$existingCode = UNIQUE CHECK GOES HERE
if (!$existingCode){
$unique = TRUE;
}
}
return $str;
}
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