10c03-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 19 行

<?php
// If we have a 'GET' parameter called state and it is set to 'save'
if (isset($_GET['state']) && ($_GET['state'] == 'save')) {
    // Check if the POST data is blank:
    if (count($_POST) == 0) {
        // Looks like a bookmark, the GET existed but no post:
        die("ERROR:  This page has been improperly accessed.");
    }
    
    // Otherwise, output some data:
    echo "<p>You claim to live in state: {$_POST['state']}</p>\n";
    echo "<p>The script in is the '{$_GET['state']}' state.</p>\n";
}
?>
<form action="<?= $_SERVER['PHP_SELF'] ?>?state=save"
  method="post" name="f1">
<p>In what state do you live? <input name="state" type="text" /></p>
<p><input type="submit" /></p>
</form>