0228class.php

<?php
 class Introduce {
 private $arraylist = array();

 public function regist($num) {
 $this->arraylist[] = $num;
 }

 public function show() {
 for ($i=0; $i<count($this->arraylist); $i++) {
 if ($i%2 == 0) {
 echo $this->arraylist[$i][0] . "：" . $this->arraylist[$i][1] . "\n";
 }
 else {
 echo "奇数は出力しません。\n";
 }
 }
 }
 }

 $obj = new Introduce();
 $obj->regist(array("鈴木","熊本出身です。"));
 $obj->regist(array("佐藤","東京出身です。"));
 $obj->regist(array("工藤","宮崎出身です。"));
 $obj->regist(array("宮本","愛知出身です。"));

main.php

<?php
	require_once("0228class.php");
	
	public function main(){
	print $obj->show();
	}
?>