01.<!DOCTYPE html>
02.<html>
03.<head>
04.<meta content="width=device-width initial-scale=1.0 minimum-scale=1.0 maximum-scale=1.0 user-scalable=no" name="viewport">
05.<meta charset="UTF-8">
06.<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.1/css/bootstrap.css">
07.<style>
08.pre {
09. padding: 20px;
10.}
11.</style>
12.</head>
13.<body>
14.
15.<pre>
16.<?php
17.
18. $wareki = ["明治", "大正", "昭和", "平成", "令和"];
19.
20. foreach( $wareki as $key => $value ) {
21. print "{$key} => {$value}\n";
22. }
23.
24. print "\n";
25.
26. for( $i = 0; $i < count( $wareki ); $i++ ) {
27. print "{$i} => {$wareki[$i]}\n";
28. }
29.
30.?>
31.</pre>
32.
33.</body>
34.</html>