PHP implements random numbering code for English names in full spelling

This article mainly introduces the random numbering script for English names implemented in PHP. It is a solution written according to a requirement. Friends who need it can refer to it

Requirement:
1. After executing the script, the students who want to go enter their English names in full, and a random number between 01-99 will be generated.
The larger the number, the more likely they will participate in the project practice. The numbers that have been captured before, The same number cannot appear next time.
2. After the first person inputs their name, the screen will output information and the name and number will be recorded in the file. The program cannot exit
and continue to wait for input from other students.

Implementation code (please execute from the command line, not the WEB environment):

<?php

// 号码库
$num = range(1, 99);

// 随机打乱
shuffle($num);

$filename = &#39;./user.txt&#39;;

// 打开记录文件
$handle = fopen($filename, &#39;w&#39;);

// 排序后的用户列表
$user = array();

while (true) {
 echo "\r\nEnter your name:";

 $content = read();

 // exit 退出脚本
 if ($content == &#39;exit&#39;) {
  break;
 }

 // 取出随机值
 $n = array_pop($num);

 // 写入文件
 fwrite($handle, $n.&#39; &#39;.$content."\r\n");

 $user[$n] = $content;

 // 输出到控制台
 echo "Hi $content, your number is " . $n."\r\n";
}

// 关闭控制到输入流
fclose($GLOBALS[&#39;StdinPointer&#39;]);

fwrite($handle, "\r\n");
fwrite($handle, &#39;----------------华丽的分隔线-----------------&#39;);
fwrite($handle, "\r\n");

ksort($user);

foreach ($user as $k=>$v) {
 fwrite($handle, $k.&#39; &#39;.$v."\r\n");
}

// 关闭文件
fclose($handle);


/**
* 获取命令行输入值
* @param string $length
* @return string
*/
function read($length=&#39;255&#39;){
 if (!isset($GLOBALS[&#39;StdinPointer&#39;])){
  $GLOBALS[&#39;StdinPointer&#39;]=fopen("php://stdin","r");
 }
 $line=fgets($GLOBALS[&#39;StdinPointer&#39;],$length);
 return trim($line);
}

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