php CRUD와 모듈화

PHP

php CRUD와 모듈화

식혜야 2023. 12. 20. 18:36

CRUD

index.php

<?php
function print_title(){
  if(isset($_GET['id'])){
    echo $_GET['id'];
  } else {
    echo "Welcome";
  }
}

function print_description(){
  if(isset($_GET['id'])){
    echo file_get_contents("data/".$_GET['id']);
  } else {
    echo "Hello, PHP";
  }
}

function print_list(){
  $list = scandir('./data');
  $i = 0;
  while($i < count($list)){
    if($list[$i] != '.') {
      if($list[$i] != '..') {
        echo "<li><a href=\"index.php?id=$list[$i]\">$list[$i]</a></li>\n";
      }
    }
    $i = $i + 1;
  }
}
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>
      <?php
      print_title();
      ?>
    </title>
  </head>
  <body>
    <h1><a href="index.php">WEB</a></h1>
    <ol>
      <?php
      print_list();
      ?>
    </ol>
    <a href="create.php">create</a>
    <?php if(isset($_GET['id'])) { ?>
      <a href="update.php?id=<?=$_GET['id']?>">update</a>
      <form action="delete_process.php" method="post">
        <input type="hidden" name="id" value="<?=$_GET['id']?>">
        <input type="submit" value="delete">
      </form>
    <?php } ?>
    <h2>
      <?php
      print_title();
      ?>
    </h2>
    <?php
    print_description();
     ?>
  </body>
</html>

create.php

<?php
function print_title(){
  if(isset($_GET['id'])){
    echo $_GET['id'];
  } else {
    echo "Welcome";
  }
}
function print_description(){
  if(isset($_GET['id'])){
    echo file_get_contents("data/".$_GET['id']);
  } else {
    echo "Hello, PHP";
  }
}
function print_list(){
  $list = scandir('./data');
  $i = 0;
  while($i < count($list)){
    if($list[$i] != '.') {
      if($list[$i] != '..') {
        echo "<li><a href=\"index.php?id=$list[$i]\">$list[$i]</a></li>\n";
      }
    }
    $i = $i + 1;
  }
}
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>
      <?php
      print_title();
      ?>
    </title>
  </head>
  <body>
    <h1><a href="index.php">WEB</a></h1>
    <ol>
      <?php
      print_list();
      ?>
    </ol>
    <a href="create.php">create</a>
    <form action="create_process.php" method="post">
      <p>
        <input type="text" name="title" placeholder="Title">
      </p>
      <p>
        <textarea name="description" placeholder="Description"></textarea>
      </p>
      <p>
        <input type="submit">
      </p>
    </form>
  </body>
</html>

create_process.php

<?php
file_put_contents('data/'.$_POST['title'], $_POST['description']);
header('Location: /index.php?id='.$_POST['title']);
?>

update.php

<?php
function print_title(){
  if(isset($_GET['id'])){
    echo $_GET['id'];
  } else {
    echo "Welcome";
  }
}
function print_description(){
  if(isset($_GET['id'])){
    echo file_get_contents("data/".$_GET['id']);
  } else {
    echo "Hello, PHP";
  }
}
function print_list(){
  $list = scandir('./data');
  $i = 0;
  while($i < count($list)){
    if($list[$i] != '.') {
      if($list[$i] != '..') {
        echo "<li><a href=\"index.php?id=$list[$i]\">$list[$i]</a></li>\n";
      }
    }
    $i = $i + 1;
  }
}
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>
      <?php
      print_title();
      ?>
    </title>
  </head>
  <body>
    <h1><a href="index.php">WEB</a></h1>
    <ol>
      <?php
      print_list();
      ?>
    </ol>
    <a href="create.php">create</a>
    <?php if(isset($_GET['id'])) { ?>
      <a href="update.php?id=<?=$_GET['id']?>">update</a>
    <?php } ?>
    <h2>
     <form action="update_process.php" method="post">
       <input type="hidden" name="old_title" value="<?=$_GET['id']?>">
       <p>
         <input type="text" name="title" placeholder="Title" value="<?php print_title(); ?>">
       </p>
       <p>
         <textarea name="description" placeholder="Description"><?php print_description(); ?></textarea>
       </p>
       <p>
         <input type="submit">
       </p>
     </form>
  </body>
</html>

update_process.php

<?php
rename('data/'.$_POST['old_title'], 'data/'.$_POST['title']);
file_put_contents('data/'.$_POST['title'], $_POST['description']);
header('Location: /index.php?id='.$_POST['title']);
?>

delete_process.php

<?php
unlink('data/'.$_POST['id']);
header('Location: /index.php');
?>

모듈화 - require(), require_once()

위의 CRUD 코드는 중복하는 코드가 많아 비효율적이다. 중복되는 코드를 파일로 모듈화 하는 리팩토링 과정을 require() 함수와, require_once() 함수를 통해 진행해 보자.

*외부 파일을 포함하는 함수 4가지 정리

https://www.codingfactory.net/10121

PHP / include(), include_once(), require(), require_once() / 외부 파일 포함하는 함수

여러 파일에 공통적으로 사용하는 코드는 별도의 파일로 만든 후 각 파일에서 불러오는 것이 좋습니다. 코드의 양이 줄어들고, 수정이 용이하기 때문입니다. 외부 파일을 포함하는 함수는 네 가

www.codingfactory.net

lib/print.php

<?php
function print_title(){
  if(isset($_GET['id'])){
    echo $_GET['id'];
  } else {
    echo "Welcome";
  }
}
function print_description(){
  if(isset($_GET['id'])){
    echo file_get_contents("data/".$_GET['id']);
  } else {
    echo "Hello, PHP";
  }
}
function print_list(){
  $list = scandir('./data');
  $i = 0;
  while($i < count($list)){
    if($list[$i] != '.') {
      if($list[$i] != '..') {
        echo "<li><a href=\"index.php?id=$list[$i]\">$list[$i]</a></li>\n";
      }
    }
    $i = $i + 1;
  }
}
?>

view/top.php

<?php
require_once('lib/print.php');
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>
      <?php
      print_title();
      ?>
    </title>
  </head>
  <body>
    <h1><a href="index.php">WEB</a></h1>
    <ol>
      <?php
      print_list();
      ?>
    </ol>

view/bottom.php

</body>
</html>

index.php

<?php
require_once('lib/print.php');
require_once('view/top.php');
?>
    <a href="create.php">create</a>
    <?php if(isset($_GET['id'])) { ?>
      <a href="update.php?id=<?=$_GET['id']?>">update</a>
      <form action="delete_process.php" method="post">
        <input type="hidden" name="id" value="<?=$_GET['id']?>">
        <input type="submit" value="delete">
      </form>
    <?php } ?>
    <h2>
      <?php
      print_title();
      ?>
    </h2>
    <?php
    print_description();
     ?>
<?php
require_once('view/bottom.php');
?>

create.php

<?php
require('lib/print.php');
require('view/top.php');
?>
    <a href="create.php">create</a>
    <form action="create_process.php" method="post">
      <p>
        <input type="text" name="title" placeholder="Title">
      </p>
      <p>
        <textarea name="description" placeholder="Description"></textarea>
      </p>
      <p>
        <input type="submit">
      </p>
    </form>
<?php
require('view/bottom.php');
?>

update.php

<?php
require('lib/print.php');
require('view/top.php');
?>
    <a href="create.php">create</a>
    <?php if(isset($_GET['id'])) { ?>
      <a href="update.php?id=<?=$_GET['id']?>">update</a>
    <?php } ?>
    <h2>
     <form action="update_process.php" method="post">
       <input type="hidden" name="old_title" value="<?=$_GET['id']?>">
       <p>
         <input type="text" name="title" placeholder="Title" value="<?php print_title(); ?>">
       </p>
       <p>
         <textarea name="description" placeholder="Description"><?php print_description(); ?></textarea>
       </p>
       <p>
         <input type="submit">
       </p>
     </form>
<?php
require('view/bottom.php');
?>

References

https://opentutorials.org/module/3266

WEB2 - PHP

수업소개 이 수업은 웹사이트를 만들어가면서 PHP의 문법과 웹애플리케이션의 제작법을 동시에 알려드리기 위해서 고안된 수업입니다. 수업대상 이 수업은 많은 웹페이지를 생산하면서 발생

opentutorials.org