Home > Article > Backend Development > How to implement event candidate lottery function in PHP
How to implement event candidate lottery function in PHP
- 墨辰丷Original
- 2018-05-23 17:12:122146browse
This article mainly introduces the PHP implementation of the event candidate lottery function. Randomly select a specified number of people and list the names of the selected people in order. It has certain reference value. Interested friends can refer to it
The scenario introduced in this article is a lottery for event candidates. A specified number of people are selected through simple random selection, and the names of the selected people are listed in sequence. The sample code is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>活动人选</title>
</head>
<body>
<?php
$lotterPeopleArr = array();
$num = 8;
for($i=0;$i<$num;$i++){
$lotterPeople = GetRandStr(1);
while(in_array($lotterPeople, $lotterPeopleArr)){
$lotterPeople = GetRandStr(1);
}
$lotterPeopleArr[$i] = $lotterPeople;
echo "抽中人：". $lotterPeopleArr[$i].'<br/>';
}
// echo '抽中人：'. $lotterPeople;
/**
* 生成随机数
* $type int 默认(字母&&数字) 1 纯字母 2.纯数字 3.英文单词
*/
function GetRandStr($len='4',$type='3')
{
switch($type)
{
case '1';
$chars = 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", "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"
);
break;
case '2';
$chars = array(
"0", "1", "2",
"3", "4", "5", "6", "7", "8", "9"
);
break;
case '3';
$chars = array(
"小华","小冠","小王","小吴","小朱","小何","小陈","小熊","小斌","小李","小春","小超","小张","小郭","小柯","小梁","小理","小龚","小杰","小余","小洪","小郑","小志","小潘",
);
break;
default;
$chars = 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", "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"
);
break;
}
$charsLen = count($chars) - 1;
shuffle($chars);
$output = "";
for ($i=0; $i<$len; $i++)
{
$output .= $chars[mt_rand(0, $charsLen)];
}
return $output;
}
?>
</body>
</html>
The above is the entire content of this article, I hope it will be helpful to everyone's learning.
Related recommendations:
php automatic loading method collection_php skills
PHPUse stream_context_create() to simulate POST/GET request method_php skills
The above is the detailed content of How to implement event candidate lottery function in PHP. For more information, please follow other related articles on the PHP Chinese website!