PHP:数组似乎重新初始化

时间:2012-08-17 17:07:25

标签: php arrays oop

我正在尝试创建一个基本的html表单,将信息传递给php对象,然后将所述对象添加到数组中。它的工作原理是将信息从表单传递到对象,然后将其添加到数组并显示所述对象。但是,当我尝试向数组添加第二个对象时,它似乎只是用一个新的单个元素数组替换该数组而不是添加它。这是我的代码...任何想法?

index.php文件:

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Custom Forms</title>
    </head>
    <body>
        <h2>Add Data</h2>
        <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
            First Name:<input type="text" size="12" maxlength="12" name="Fname"><br />
            Last Name:<input type="text" size="12" maxlength="36" name="Lname"><br />
            <button type="submit" name="submit" value="client">Submit</button>
        </form>
        <?php
        include_once 'clientInfo.php';
        include_once 'clientList.php';

        if ($_POST) {
            $clientArray[] = new clientInfo($_POST["Fname"], $_POST["Lname"]);
        }

        if (!empty($clientArray)) {
            $clientList = new clientList($clientArray);
        }
        ?>
        <p><a href="clientList.php">go to client list</a></p>
    </body>
</html>

clintInfo.php文件:

<?php
class clientInfo {

    private$Fname;
    private$Lname;

    public function clientInfo($F, $L) {
        $this->Fname = $F;
        $this->Lname = $L;
    }

    public function __toString() {
        return $this->Fname . " " . $this->Lname;
    }
}
?>

clientList.php文件:

<?php
class clientList {
    public function clientList($array) {
        foreach($array as $c) {
            echo $c;
        }
    }
}
?>

带答案的编辑工作代码

index.php文件:

<?php
include('clientInfo.php');
session_start();
?>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Custom Forms</title>
    </head>
    <body>
        <h2>Add Data</h2>
        <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
            First Name:<input type="text" size="12" maxlength="12" name="Fname"><br />
            Last Name:<input type="text" size="12" maxlength="36" name="Lname"><br />
            <button type="submit" name="submit" value="client">Submit</button>
        </form>
        <?php
        if ($_POST) {
            $testClient = new clientInfo($_POST["Fname"], $_POST["Lname"]);

            echo $testClient . " was successfully made. <br/>";

            $_SESSION['clients'][] = $testClient;

            echo end($_SESSION['clients']) . " was added.";
        }
        ?>
        <p><a href="clientList.php">go to client list</a></p>
    </body>
</html>

clientList.php文件:

<?php
include('clientInfo.php');
session_start();
?>
<!DOCTYPE html>
<html>
    <head>
        <title>
            Accessing session variables
        </title>
    </head>
    <body>
        <h1>
            Content Page
        </h1>
        <?php
        for ($i = 0; $i < sizeof($_SESSION['clients']); $i++) {
            echo $_SESSION['clients'][$i] . " was added. <br/>";
        }
        ?>
        <p><a href="index.php">return to add data</a></p>
    </body>
</html>

目标文件clientInfo.php保持不变。对象需要存储在多维$ _SESSION数组中并使用for循环调用,foreach循环不起作用,除非其他人知道使foreach循环工作的方法,坚持使用for。另外,$ testClient变量可以被跳过,只是同时创建并放在$ _SESSION中,但是使用temp变量可以更容易地解决问题并看看如何使其工作。我以为我会用Josh提供的答案发布工作代码!

1 个答案:

答案 0 :(得分:3)

您需要为数组对象添加持久性。

请参阅PHP的$_SESSION

如果不在请求之间将其存储到内存或磁盘,则在连续加载时不可能存在。该链接中有一个很好的教程可以让你启动并运行。

或者,您可以将数据存储在数据库中,以满足更大的需求。