lte-exam-chapter-10.php

#!/usr/bin/php
<?php

$terms = [
    "RRM的英文全称" => "Radio Resource Management",
    "LTE最小调度周期是多长时间" => "1ms",
    "LTE支持多种系统带宽，它们是（各带宽间用英文逗号间隔）" => "1.4MHz,3MHz,5MHz,10MHz,15MHz,20MHz",
    "RAC的英文全称" => "Radio Admission Control",
    "RBC的英文全称" => "Radio Bearer Control",
    "DRA的英文全称" => "Dynamic Resource Allocation",
    "ICIC的英文全称" => "Inter Cell Interference Coordination",
    "LB的英文全称" => "Load Balance",
    "CMC的英文全称" => "Connection Mobility Control",
    "QoS的英文全称" => "Quality of Service",
    "RRM的职责范围包括：无线准入控制、无线承载控制、动态资源调度分配、小区间干扰协调、负责均衡、连接移动性控制、中继和" => "系统间无线资源管理",
    "小区间干扰控制技术主要有三种，它们是干扰随机化技术、干扰消除技术和" => "小区间干扰协调技术",
    "负载均衡也称为负载控制，本质上是一种话务分流技术，功能模块位于" => "eNodeB",
    "根据参与话务分流的小区范围不同，负载均衡可以分为：基站内小区之间的负荷均衡、基站间的负荷均衡、MME之间的负荷均衡和" => "跨系统间的负荷均衡",
    "评估负载均衡算法的好坏有三个维度：资源利用率、业务QoS满意率和" => "掉话率",
    "根据UE和网络是否进行业务连接，可以把UE的状态分为两种：空闲状态和" => "连接状态",
    "LTE的切换是硬切换还是软切换" => "硬切换",
    "LTE切换流程可以简单第分为三个过程：切换准备、切换执行和" => "切换完成",
    "中继技术（Relay）是什么标准的关键技术之一" => "LTE-A",
    "RS的英文全称" => "Relay Station"
];

system("clear");
$name = readline("Input Your Exam Name（Like: 04-张三）: ");
system("date");
$time_start = time();
$count = count($terms);

echo PHP_EOL;
echo "Hello, $name!";
echo PHP_EOL;
$line = "Init";
$i = 0;

// while ($term = current($terms)) {
    // $key = key($terms);
while ($key = array_rand($terms)) {
    $term = $terms[$key];
	$i++;
    while ($line !== $term) {
        if ($line !== "Init") {
            echo "Wrong! Try again!" . PHP_EOL;
        }
        $line = readline("$i/$count. $key: ");
    }
    echo "Good!";
    $line = "Init";
    echo PHP_EOL;
    // next($terms);
    unset($terms[$key]);
}

system("date");
$time_end = time();
echo PHP_EOL;
$seconds = $time_end - $time_start;
echo "$name, you finished the test in " . $seconds . " seconds!";
echo PHP_EOL;
echo "Great!!!";
echo PHP_EOL;

$content = "$name: $seconds seconds, " . date('Y-m-d H:i:s', $time_start) . ', ' . date('Y-m-d H:i:s', $time_end) . "\n";
file_put_contents('./' . basename(__FILE__, '.php') . '.log', $content, FILE_APPEND | LOCK_EX);

while (true) { readline(); }