PHP session control example analysis-PHP Tutorial-php.cn

PHP session control example analysis

墨辰丷

Release： 2023-03-28 10:26:02

Original

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This article mainly introduces PHP session control, and analyzes PHP's related operating techniques for cookies and sessions in the form of examples. Friends in need can refer to it

The details are as follows:

About Test code for cookie and session:

<?php
session_start();
define(&#39;u&#39;,&#39;a&#39;);
define(&#39;p&#39;,&#39;1&#39;);
if (isset($_GET[&#39;r&#39;]) && $_GET[&#39;r&#39;]== 1) {
  unset($_COOKIE[&#39;username&#39;]);
  unset($_COOKIE[&#39;password&#39;]);
  unset($_SESSION[&#39;valid_login&#39;]);
}
if (isset($_POST[&#39;username&#39;]) && isset($_POST[&#39;password&#39;])) {
  $username = $_POST[&#39;username&#39;];
  $password = $_POST[&#39;password&#39;];
  if ($username == u && $password == p) {
    $_SESSION[&#39;valid_login&#39;] = 1;
    setcookie(&#39;username&#39;, $username);
    setcookie(&#39;password&#39;, $password);
  } else {
    echo &#39;incorrect u or p&#39;;
  }
}
?>
<?php
if (isset($_SESSION[&#39;valid_login&#39;])) {
  printf(&#39;welcom, %s&#39;, $_COOKIE[&#39;username&#39;]);
} else {
?>
<form action="" method="post">
  <input type="text" name="username" value="" />
  <input type="password" name="password" value="" />
  <input type="submit" />
</form>
<?php
}
?>
<br />
<a href="cookie_session.php" title="">refresh</a>
<br />
<a href="cookie_session.php?r=1" title="">clear</a>

Copy after login

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