blocks|key|909586|text|$chars+=+"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$res+=+"";
for+($i+=+0;+$i+<+10;+$i%2B%2B)+{
++++$res+.=+$chars[mt_rand(0,+strlen($chars)-1)];
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|909587|您可以通过预先分配$res字符串并缓存strlen($chars)-1的结果来优化这一点。这将留给读者作为练习，因为您可能不会每秒生成数千张优惠券。|unstyled|offset|length|style|CODE|909588|entityMap^0|0|9|4|J|G|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@$G|O|H|P|I|J]|$G|Q|H|R|I|J]]|9|@]|A|$]]|$1|K|3|-4|5|F|7|S|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>$chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$res = "";
for ($i = 0; $i &lt; 10; $i++) {
 $res .= $chars[mt_rand(0, strlen($chars)-1)];
}
</code></pre>

You can optimize this by preallocating the <code>$res</code> string and caching the result of <code>strlen($chars)-1</code>. This is left as an exercise to the reader, since probably you won't be generating thousands of coupons per second.

blocks|key|4194448|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4194449|substr(base_convert(sha1(uniqid(mt_rand())),+16,+36),+0,+10)|code-block|syntax|javascript|4194450|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>substr(base_convert(sha1(uniqid(mt_rand())), 16, 36), 0, 10)
</code></pre>

blocks|key|2786109|text|您可以使用优惠券代码生成器PHP类文件生成N个优惠券及其可定制的，具有添加自己的掩码和自己的前缀和后缀的各种选项。Simple+PHP+coupon+code+generator|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2786110|示例：coupon::generate(8);+//+J5BST6NQ|style|CODE|2786111|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/joashp/simple-php-coupon-code-generator^0|1L|W|0|0|3|W|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@$A|U|B|V|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

You can use the coupon code generator PHP class file to generate N number of coupons and its customizable, with various options of adding own mask with own prefix and suffix. <a href="https://github.com/joashp/simple-php-coupon-code-generator" rel="nofollow">Simple PHP coupon code generator</a>

Example:
 <code>coupon::generate(8); // J5BST6NQ</code>

blocks|key|2786028|text|为什么不简单一点呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2786029|<?php
++++echo+strtoupper(uniqid());
?>|code-block|syntax|javascript|2786030|始终返回13个字符长度的大写随机代码。|2786031|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Why don't keep it simple?

<pre><code>&lt;?php
 echo strtoupper(uniqid());
?&gt;
</code></pre>

Always returns 13 character long uppercased random code.

blocks|key|911889|text|http://webarto.com/35/php-random-string-generator|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|911890|这就是你要的。|911891|function+randr($j+=+8){
$string+=+"";
++++for($i=0;$i+<+$j;$i%2B%2B){
++++++++srand((double)microtime()*1234567);
++++++++$x+=+mt_rand(0,2);
++++++++switch($x){
++++++++++++case+0:$string.=+chr(mt_rand(97,122));break;
++++++++++++case+1:$string.=+chr(mt_rand(65,90));break;
++++++++++++case+2:$string.=+chr(mt_rand(48,57));break;
++++++++}
++++}
return+strtoupper($string);+//to+uppercase
}|code-block|syntax|javascript|911892|entityMap|0|LINK|mutability|MUTABLE|url^0|0|1D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|W|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|4]]]]

<a href="http://webarto.com/35/php-random-string-generator" rel="nofollow noreferrer">http://webarto.com/35/php-random-string-generator</a>

Here you go.

<pre><code>function randr($j = 8){
$string = "";
 for($i=0;$i &lt; $j;$i++){
 srand((double)microtime()*1234567);
 $x = mt_rand(0,2);
 switch($x){
 case 0:$string.= chr(mt_rand(97,122));break;
 case 1:$string.= chr(mt_rand(65,90));break;
 case 2:$string.= chr(mt_rand(48,57));break;
 }
 }
return strtoupper($string); //to uppercase
}
</code></pre>

blocks|key|909697|text|如果对这些没有安全要求，那么你就不需要随机生成的代码了。我将只使用增量I，比如由您使用的任何RDBMS生成的I。或者，如果你有不同类型的优惠券，你可以在代码前加上一些东西，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|909698|CX00019+QZ0001C
CX0001A+QZ0001D
CX0001B+QZ0001E|code-block|syntax|javascript|909699|或者，你甚至可以在优惠券中使用字典单词，因为这样的优惠券代码更容易记忆，用户键入起来也更快。像Dreamhost这样的公司在他们的促销代码中使用这些，例如：|909700|Promo60
NoSetupFee
YELLOWGORILLA82|909701|其中一些显然是人工创建的(您可能希望有这样的选项)，但也可以使用字典列表生成它们。但是，即使它们是随机生成的无意义的短语，字符遵循逻辑模式的事实仍然使它比R7QZ8A92F1之类的东西更用户友好。因此，我强烈建议不要使用后一种类型的优惠券代码，仅仅因为它们“看起来很酷”。你的客户会感谢你的。|offset|length|style|CODE|909702|entityMap^0|0|0|0|0|25|A|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

If there are no security requirements for these, then you don't really need randomly generated codes. I would just use incremental IDs, such as those generated by whatever RDBMS you use. Optionally, if you have different types of coupons, you could prefix the codes with something, e.g.:

<pre><code>CX00019 QZ0001C
CX0001A QZ0001D
CX0001B QZ0001E
</code></pre>

Alternately, you could even use dictionary words in the coupon, as such coupon codes are easier to remember and faster for users to type. Companies like Dreamhost use these for their promo codes, e.g.:

<pre><code>Promo60
NoSetupFee
YELLOWGORILLA82
</code></pre>

Some of these are obviously human-created (which you might want to have the option of), but they can also be generated using a dictionary list. But even if they are randomly-generated nonsense phrases, the fact that the characters follow a logical pattern still makes it much more user-friendly than something like <code>R7QZ8A92F1</code>. So I would strongly advise against using the latter type of coupon codes just on the basis that they "look cool". Your customers will thank you.

blocks|key|1658376|text|$size+=+12;

$string+=+strtoupper(substr(md5(time().rand(10000,99999)),+0,+$size));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1658377|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$size = 12;

$string = strtoupper(substr(md5(time().rand(10000,99999)), 0, $size));
</code></pre>

blocks|key|2785933|text|function+generateCouponCode($length+=+8)+{
++$chars+=+'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
++$ret+=+'';
++for($i+=+0;+$i+<+$length;+%2B%2B$i)+{
++++$random+=+str_shuffle($chars);
++++$ret+.=+$random[0];
++}
++return+$ret;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2785934|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>function generateCouponCode($length = 8) {
 $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
 $ret = '';
 for($i = 0; $i &lt; $length; ++$i) {
 $random = str_shuffle($chars);
 $ret .= $random[0];
 }
 return $ret;
}
</code></pre>

blocks|key|1654450|text|您可以在php+rand手册中找到许多函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1654451|http://php.net/manual/en/function.rand.php|offset|length|1654452|我喜欢这件|1654453|+++<?php
//To+Pull+8+Unique+Random+Values+Out+Of+AlphaNumeric

//removed+number+0,+capital+o,+number+1+and+small+L
//Total:+keys+=+32,+elements+=+33
$characters+=+array(
"A","B","C","D","E","F","G","H","J","K","L","M",
"N","P","Q","R","S","T","U","V","W","X","Y","Z",
"1","2","3","4","5","6","7","8","9");

//make+an+"empty+container"+or+array+for+our+keys
$keys+=+array();

//first+count+of+$keys+is+empty+so+"1",+remaining+count+is+1-7+=+total+8+times
while(count($keys)+<+8)+{
++++//"0"+because+we+use+this+to+FIND+ARRAY+KEYS+which+has+a+0+value
++++//"-1"+because+were+only+concerned+of+number+of+keys+which+is+32+not+33
++++//count($characters)+=+33
++++$x+=+mt_rand(0,+count($characters)-1);
++++if(!in_array($x,+$keys))+{
+++++++$keys[]+=+$x;
++++}
}

foreach($keys+as+$key){
+++$random_chars+.=+$characters[$key];
}
echo+$random_chars;
?>|code-block|syntax|javascript|1654454|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|16|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

you can find a lot of function in php rand manual 
<a href="http://php.net/manual/en/function.rand.php" rel="nofollow noreferrer">http://php.net/manual/en/function.rand.php</a>

i like this one 

<pre><code> &lt;?php
//To Pull 8 Unique Random Values Out Of AlphaNumeric

//removed number 0, capital o, number 1 and small L
//Total: keys = 32, elements = 33
$characters = array(
"A","B","C","D","E","F","G","H","J","K","L","M",
"N","P","Q","R","S","T","U","V","W","X","Y","Z",
"1","2","3","4","5","6","7","8","9");

//make an "empty container" or array for our keys
$keys = array();

//first count of $keys is empty so "1", remaining count is 1-7 = total 8 times
while(count($keys) &lt; 8) {
 //"0" because we use this to FIND ARRAY KEYS which has a 0 value
 //"-1" because were only concerned of number of keys which is 32 not 33
 //count($characters) = 33
 $x = mt_rand(0, count($characters)-1);
 if(!in_array($x, $keys)) {
 $keys[] = $x;
 }
}

foreach($keys as $key){
 $random_chars .= $characters[$key];
}
echo $random_chars;
?&gt;
</code></pre>

blocks|key|2785991|text|$length+=+9;
$code+++=+(strtoupper(substr(md5(time()),+0,+$length)));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2785992|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$length = 9;
$code = (strtoupper(substr(md5(time()), 0, $length)));
</code></pre>

For an ecommerce site I want to generate a random coupon code that looks better than a randomly generated value. It should be a readable coupon code, all in uppercase with no special characters, only letters (A-Z) and numbers (0-9).

Since people might be reading this out / printing it elsewhere, we need to make this a simple-to-communicate value as well, perhaps 8-10 characters long.

Something like perhaps,

<pre><code>AHS3DJ6BW 
B83JS1HSK
</code></pre>

(I typed that, so it's not really that random)

PHP code for generating decent-looking coupon codes (mix of letters and numbers)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

对于一个电子商务网站，我想生成一个随机优惠券代码，看起来比随机生成的值更好。它应该是一个可读的优惠券代码，全部大写，没有特殊字符，只有字母(A-Z)和数字(0-9)。因为人们可能会在其他地方读出/打印它，所以我们也需要使它成为一个易于交流的值，可能有8-10个字符。就像这样，AHS3DJ6BW B83JS1HSK(这是我输入的，所以它并不是那么随机)

问PHP代码，用于生成美观的优惠券代码(字母和数字的混合)
EN

回答 10

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问PHP代码，用于生成美观的优惠券代码(字母和数字的混合)EN

回答 10

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问PHP代码，用于生成美观的优惠券代码(字母和数字的混合)
EN