라이브러리 1 (직접 만들기)

라이브러리 1 : 개론

라이브러리 2 : 직접 만들기

index.php

<?php
require("config/config.php");
require("lib/db.php");
$conn = db_init($config["host"], $config["duser"], $config["dpw"], $config["dname"]);
$result = mysqli_query($conn, "SELECT * FROM topic");
?>
<!DOCTYPE html>
<html>
<head>
     <meta charset="utf-8">
  <link rel="stylesheet" type="text/css" href="http://localhost/style.css">
</head>
<body id="target">
	<header>
    <img src="https://s3.ap-northeast-2.amazonaws.com/opentutorials-user-file/course/94.png" alt="생활코딩">
		<h1><a href="http://localhost/index.php">JavaScript</a></h1>
  </header>
	<nav>
		<ol>
    <?php
    while( $row = mysqli_fetch_assoc($result)){
      echo '<li><a href="http://localhost/index.php?id='.$row['id'].'">'.htmlspecialchars($row['title']).'</a></li>'."\n";
    }
    ?>
		</ ol>
	</nav>
  <div id="control">
    <input type="button" value="white" onclick="document.getElementById('target').className='white'"/>
    <input type="button" value="black" onclick="document.getElementById('target').className='black'" />
    <a href="http://localhost/write.php">쓰기</a>
  </div>
  <article>
  <?php
  if(empty($_GET['id']) === false ) {
      $sql = "SELECT topic.id,title,name,description FROM topic LEFT JOIN user ON topic.author = user.id WHERE topic.id=".$_GET['id'];
      $result = mysqli_query($conn, $sql);
      $row = mysqli_fetch_assoc($result);
      echo '<h2>'.htmlspecialchars($row['title']).'</h2>';
      echo '<p>'.htmlspecialchars($row['name']).'</p>';
      echo strip_tags($row['description'], '<a><h1><h2><h3><h4><h5><ul><ol><li>');
  }
  ?>
  </article>
</body>
</html>

lib/db.php

<?php
function db_init($host, $duser, $dpw, $dname){
  $conn = mysqli_connect($host, $duser, $dpw);
  mysqli_select_db($conn, $dname);
  return $conn;
}
?>

config/config.php

<?php
$config = array(
  "host"=>"localhost",
  "duser"=>"root",
  "dpw"=>"111111",
  "dname"=>"opentutorials"
);
?>

write.php

<?php
require("config/config.php");
require("lib/db.php");
$conn = db_init($config["host"], $config["duser"], $config["dpw"], $config["dname"]);
$result = mysqli_query($conn, "SELECT * FROM topic");
?>
<!DOCTYPE html>
<html>
<head>
     <meta charset="utf-8">
  <link rel="stylesheet" type="text/css" href="http://localhost/style.css">
</head>
<body id="target">
	<header>
    <img src="https://s3.ap-northeast-2.amazonaws.com/opentutorials-user-file/course/94.png" alt="생활코딩">
		<h1><a href="http://localhost/index.php">JavaScript</a></h1>
  </header>
	<nav>
		<ol>
    <?php
    while( $row = mysqli_fetch_assoc($result)){
      echo '<li><a href="http://localhost/index.php?id='.$row['id'].'">'.$row['title'].'</a></li>'."\n";
    }
    ?>
		</ ol>
	</nav>
  <div id="control">
    <input type="button" value="white" onclick="document.getElementById('target').className='white'"/>
    <input type="button" value="black" onclick="document.getElementById('target').className='black'" />
    <a href="http://localhost/write.php">쓰기</a>
  </div>
  <article>
    <form action="process.php" method="post">
      <p>
        제목 : <input type="text" name="title">
      </p>
      <p>
        작성자 : <input type="text" name="author">
      </p>
      <p>
        본문 : <textarea name="description"></textarea>
      </p>
      <input type="submit" name="name">
    </form>
  </article>
</body>
</html>

process.php

<?php
require("config/config.php");
require("lib/db.php");
$conn = db_init($config["host"], $config["duser"], $config["dpw"], $config["dname"]);

$title = mysqli_real_escape_string($conn, $_POST['title']);
$author = mysqli_real_escape_string($conn, $_POST['author']);
$description = mysqli_real_escape_string($conn, $_POST['description']);

$sql = "SELECT * FROM user WHERE name='".$author."'";
$result  = mysqli_query($conn, $sql);
if($result->num_rows == 0){
  $sql = "INSERT INTO user (name, password) VALUES('".$author."', '111111')";
  mysqli_query($conn, $sql);
  $user_id = mysqli_insert_id($conn);
} else {
  $row = mysqli_fetch_assoc($result);
  $user_id = $row['id'];
}
$sql = "INSERT INTO topic (title,description,author,created) VALUES('".$title."', '".$description."', '".$user_id."', now())";
$result = mysqli_query($conn, $sql);
header('Location: http://localhost/index.php');
?>