php刪除cookie的兩種方式是什麼

兩種方式：1、使用“setcookie(cookiename,NULL)”語句將cookie的值設為空；2、使用“setcookie('cookiename','',time()-3600)”語句將cookie的過期時間設定為過去。

本教學操作環境：windows7系統、PHP7.1版，DELL G3電腦

php刪除/清除cookie的兩種方法

將cookie的值設為空,即：setcookie('cookiename', '')或setcookie(cookiename, NULL);

將cookie的過期時間設定為過去，即：setcookie('cookiename','',time()-3600); 

方法一：將cookie的值設為空白

<?php
setcookie ( "cookie_user", "test", time () + 60 * 60 * 24 * 30 );
setcookie ( "cookie_pass", md5 ( "test" ), time () + 60 * 60 * 24 * 30 );

function logout() {
  setcookie ( "cookie_user", "", time () + 60 * 60 * 24 * 30 );
  setcookie ( "cookie_pass", "", time () + 60 * 60 * 24 * 30 );
}
/* http://www.manongjc.com/article/1253.html */
logout ();
echo $_COOKIE [&#39;cookie_user&#39;] . "<br />";
echo "You have successfully logged out.";
?>

方法二：將cookie的過期時間設定為過去

<?php
setcookie ( "cookie_user", "test", time () + 60 * 60 * 24 * 30 );
setcookie ( "cookie_pass", md5 ( "test" ), time () + 60 * 60 * 24 * 30 );

function logout() {
  setcookie ( "cookie_user", "test", time () - 100 );
  setcookie ( "cookie_pass", md5 ( "test" ), time () - 100 );
}
logout ();
echo $_COOKIE [&#39;cookie_user&#39;] . "<br />";
echo "You have successfully logged out.";
?>

推薦學習：《PHP影片教學》

以上是php刪除cookie的兩種方式是什麼的詳細內容。更多資訊請關注PHP中文網其他相關文章！