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๐Ÿ˜์›น์‚ฌ์ดํŠธ์˜ ๋น„ํ•˜์ธ๋“œ PHP : ์กฐ๊ฑด๋ฌธ์˜ ํ™œ์šฉ ๋ณธ๋ฌธ

DB/๐Ÿ˜PHP

๐Ÿ˜์›น์‚ฌ์ดํŠธ์˜ ๋น„ํ•˜์ธ๋“œ PHP : ์กฐ๊ฑด๋ฌธ์˜ ํ™œ์šฉ

4:Bee 2023. 9. 4. 01:33
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 YouTube Link  
WEB2 PHP 13 แ„Œแ…ฉแ„€แ…ฅแ†ซแ„†แ…ฎแ†ซแ„‹แ…ดแ„’แ…ชแ†ฏแ„‹แ…ญแ†ผ
https://youtu.be/U_kj_IlbH20?si=5oqR3Afnu4a4aYzQ

isset()

isset()๋ฌธ๋ฒ• ์•ˆ์—์„œ ํ•ด๋‹น ๊ฐ’์œผ๋กœ ์„ค์ •๋˜์–ด ์žˆ๋Š”์ง€์— ๋”ฐ๋ผ True์™€ False๋กœ ๋‚˜๋‰œ๋‹ค. 

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <h1><a href="index.php">WEB</a></h1>
  <ol>
    <li><a href="index.php?id=HTML">HTML</a></li>
    <li><a href="index.php?id=CSS">CSS</a></li>
    <li><a href="index.php?id=JavaScript">JavaScript</a></li>
  </ol>
  <h2>
    <?php
    if (isset($_GET['id'])) {
      echo $_GET['id'];
    } else {
      echo "Welcome";
    }
    ?>
  </h2>
  <?php
  if (isset($_GET['id'])) {
    echo file_get_contents("data/" . $_GET['id']);
  } else {
    echo "Hello, PHP";
  }
  ?>
</body>

</html>

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