PHP script to practice several LTE terms.

lte-terms.php

#!/usr/bin/php
<?php

$terms = [
    "LTE" => "Long Term Evolution",
    "SAE" => "System Architecture Evolution",
    "E-UTRAN" => "Evolved Universal Terrestrial Radio Access Network",
    "EPC" => "Evolved Packet Core",
    "EPS" => "Evolved Packet System",
    "UE" => "User Equipment",
    "MME" => "Mobility Management Entity",
    "S-GW" => "Serving Gateway",
    "P-GW" => "Packet Data Node Gateway"
];

system("clear");
$name = readline("Input Your Name: ");
system("date");
$time_start = time();

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

while ($term = current($terms)) {
    $key = key($terms);
    while ($line !== $term) {
        if ($line !== "Init") {
            echo "Wrong! Try again!" . PHP_EOL;
        }
        $line = readline("$key: ");
    }
    echo "Good!";
    $line = "Init";
    echo PHP_EOL;
    next($terms);
}

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_end) . "\n";
file_put_contents("./lte-terms.log", $content, FILE_APPEND | LOCK_EX);

while (true) { readline(); }