php cookie注销 设置 输出和注销学习笔记

setcookie(name, value, expire, path, domain);

<?php
//注销cookie
if(isset($_GET[&#39;out&#39;])){
setcookie(&#39;us&#39;,"");
echo "<script>location.href=&#39;index.php&#39;</script>"; 
}

//设置cookie
if(isset($_POST[&#39;sub&#39;])){
setcookie("us",$_POST[&#39;user&#39;],time()+3600);
echo "<script>location.href=&#39;index.php&#39;</script>";
}

//输出和注销cookie
if($_COOKIE[&#39;us&#39;]){
echo $_COOKIE[&#39;us&#39;];
echo "<a href=&#39;index.php?out=out&#39;>注销cookies</a>"; 
}

?>
<form method="post">
<input type="text" name="user">
<input type="password" name="pass">
<input type="submit" name="sub" value="提交">
</form>