標籤：基本 reg php.ini cti mit for sel rod 方法
1、php預設是不開啟會話的，要使用會話用兩種方法：（1）使用session_start();顯示的開啟會話。（2）在php.ini中找到如下的一行：找到session.auto_start = 0，將0設定為1.下面通過一個類比購物車的程式來展示seeion的基本操作。
session1.php
1 <?php 2 //session_start(); 3 ?> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <title>Storing an array with a session</title> 8 </head> 9 <body>10 <h1>Product Choice Page</h1>11 <?php12 if(isset($_POST[‘form_products‘])){13 if(!empty($_SESSION[‘products‘])){14 $products = array_unique(15 array_merge(unserialize($_SESSION[‘products‘]), $_POST[‘form_products‘]));16 $_SESSION[‘products‘]=serialize($products);17 }18 else{19 $_SESSION[‘products‘]=serialize($_POST[‘form_products‘]);20 }21 echo "<p>your products have been registered!</p>";22 }23 ?>24 <form method="post" action="<?php echo $_SERVER[‘PHP_SELF‘]; ?>">25 <p>26 <label for = "form_products">Select some products:</label><br />27 <select id="form_products" name="form_products[]" multiple="multiple" size="3">28 <option value="Sonic Screwdriver">Sonic Screwdriver</option>29 <option value="Hal 2000">Hal 2000</option>30 <option value="Tardis">Tardis</option>31 <option value="Transportor">Transportor</option>32 </select>33 </p>34 <button type="submit" name="submit" value="choose">Submit Form</button>35 </form>36 <p><a href="session2.php">go to content page</a> </p>37 </body>38 </html>
session2.php
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <title>Storing an array with a session</title> 5 </head> 6 <body> 7 <h1>Product Choice Page</h1> 8 <?php 9 if(isset($_POST[‘form_products‘])){10 if(!empty($_SESSION[‘products‘])){11 $products = array_unique(12 array_merge(unserialize($_SESSION[‘products‘]), $_POST[‘form_products‘]));13 $_SESSION[‘products‘]=serialize($products);14 }15 else{16 $_SESSION[‘products‘]=serialize($_POST[‘form_products‘]);17 }18 echo "<p>your products have been registered!</p>";19 }20 ?>21 <form method="post" action="<?php echo $_SERVER[‘PHP_SELF‘]; ?>">22 <p>23 <label for = "form_products">Select some products:</label><br />24 <select id="form_products" name="form_products[]" multiple="multiple" size="3">25 <option value="Sonic Screwdriver">Sonic Screwdriver</option>26 <option value="Hal 2000">Hal 2000</option>27 <option value="Tardis">Tardis</option>28 <option value="Transportor">Transportor</option>29 </select>30 </p>31 <button type="submit" name="submit" value="choose">Submit Form</button>32 </form>33 <p><a href="session2.php">go to content page</a> </p>34 </body>35 </html>
PHP會話——類比購物車的功能
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