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webarenaでubuntu その55

Last updated at Posted at 2019-10-04

#概要

webarenaでubuntu18.04やってみた。
練習問題やってみた。

#練習問題

いいねボタンを設置せよ。

#写真

image.png

#サンプルコード

<?php
	header("Access-Control-Allow-Origin: *");
	header("Content-Type:  application/json");
	$id = "test";
	$db = new PDO("mysql:host=localhost;dbname=mydb;", 'user', 'pass');
	if (!$db)
	{
		print "connect error!! <br>";
	}
	else
	{
		$sql = "SELECT * FROM counter WHERE id='$id'";
		$rs = $db->query($sql);
		if (!$rs)
		{
			print "Error in database!! 0 <br>";
			print $sql;
		}
		else
		{
			$userData = array();
			while ($row = $rs->fetch())
			{
    			$userData[] = array('count' => $row['cnt']);
			}
			echo json_encode($userData);
		}
	}
?>

#成果物

以上。

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