程式設計@筆記

<?php

session_start();
$_SESSION["A"] = "Some Value";
echo $_SESSION["A"];
echo "<br>";

session_start();
$_SESSION["A"] = "Some New Value1"; // set new value
echo $_SESSION["A"];
echo "<br>";

session_start();
$_SESSION["A"] = "Some New Value2"; // set new value
session_reset(); // old session value restored
echo $_SESSION["A"];
?>

輸出：
Some Value
Some New Value1
Some Value