试图让这个随机问候生成器工作。起初我没有 $greet 变量的数组，但他们收到错误消息说我没有定义变量。现在我收到一个数组到字符串的转换错误。有什么想法吗？<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>hello</title></head><body><?php//store random greetings$greet = array('Hello','Welcome','Greetings!','Salutatons!','Good day!', 'Yo!');switch($greet){case 1: $greet = 'Hello!'; break; case 2: $greet = 'Welcome!'; break;case 3: $greet = 'Greetings!'; break;case 4: $greet = 'Salutations!'; break;case 5: $greet = 'Good day!'; break;case 6: $greet = 'Yo!'; break;}echo $greet;//set the seed for mtrand with the number of microseconds//since the last full second of the clockmt_srand((double)microtime() * 1000000);//computes a random integer 0-4$number=mt_rand(0,5);echo $number;?></body></html>
1 回答
梵蒂冈之花
TA贡献1900条经验 获得超5个赞
您应该使用array_rand()从数组中获取随机键。不是开关/外壳。
看看下面的代码。现在$greet变量将用数组中的随机问候覆盖自己。
<?php
//store random greetings
$greet = array('Hello','Welcome','Greetings!','Salutatons!','Good day!', 'Yo!');
$greet = $greet[array_rand($greet)];
echo $greet;
//set the seed for mtrand with the number of microseconds
//since the last full second of the clock
mt_srand((double)microtime() * 1000000);
//computes a random integer 0-4
$number=mt_rand(0,5);
echo $number;
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