Question

我正在尝试制作一个程序，从数据库中随机抽取5个单词并将它们插入到数组中。页面最初根据需要加载，但单击按钮后没有任何反应。没有任何警报被触发，因此绝不能输入该功能，但为什么超出我的范围。另外，当我第一次尝试在浏览器上运行时，我收到一个错误，说名称不是合法索引（引用第13行），所以对此的建议也会很棒。

lingo.php：

<?php
    session_start();
    if (empty($_POST["name"])):
       $_SESSION["error"] = "You did not enter a name.";
       header("Location: entername.php");
    else:
       $name = $_POST["name"];
       setcookie("name", "$name", time()+3600);
    endif;
?>
<html>
  <head>
    <b>Welcome to Lingo, <?php echo $_COOKIE["name"]; ?></b><br />
    <script src = "http://code.jquery.com/jquery-latest.js"></script>
    <script type = "text/javascript" language = "javascript">
    var arr = [];
    function collectWords() {
        $.post("getWord.php",
    function(data) {
        arr[word1] = $(data).find("Word1").text();
        alert("function reached");
        alert(arr[word1]);
        arr[word2] = $(data).find("Word2").text();
        alert(arr[word2]);
        arr[word3] = $(data).find("Word3").text();
        alert(arr[word3]);
        arr[word4] = $(data).find("Word4").text();
        alert(arr[word4]);
        arr[word5] = $(data).find("Word5").text();
        alert(arr[word5]);
    });
    }
    </script>
  </head>
  <body>
    <table id = "theTable" border = "1" class = "thetable"> </table>
    <input type = "submit" value = "Start" onclick = "collectWords()">
  </body>
</html>

getWord.php

<?php
   $db = new mysqli('localhost', 'spj916', "cs4501", 'spj916');
   if ($db->connect_error):
      die ("Could not connect to db " . $db->connect_error);
   endif;

   $query = "select word from Words order by rand() limit 1";
   $result = $db->query($query);
   $rows = $result->num_rows;
   if ($rows >= 1):
      header('Content-type: text/xml');
      echo "<?xml version='1.0' encoding='utf-8'?>";
      echo "<Word1>";
      $row = $result->fetch_array();
      $ans = $row["word"];
      echo "<value>$ans</value>";
      echo "</Word1>";
   else:
      die ("DB Error");
   endif;

   $query = "select word from Words order by rand() limit 1";
   $result = $db->query($query);
   $rows = $result->num_rows;
   if ($rows >= 1):
      header('Content-type: text/xml');
      echo "<?xml version='1.0' encoding='utf-8'?>";
      echo "<Word2>";
      $row = $result->fetch_array();
      $ans = $row["word"];
      echo "<value>$ans</value>";
      echo "</Word2>";
   else:
      die ("DB Error");
   endif;

   $query = "select word from Words order by rand() limit 1";
   $result = $db->query($query);
   $rows = $result->num_rows;
   if ($rows >= 1):
      header('Content-type: text/xml');
      echo "<?xml version='1.0' encoding='utf-8'?>";
      echo "<Word3>";
      $row = $result->fetch_array();
      $ans = $row["word"];
      echo "<value>$ans</value>";
      echo "</Word3>";
   else:
      die ("DB Error");
   endif;

   $query = "select word from Words order by rand() limit 1";
   $result = $db->query($query);
   $rows = $result->num_rows;
   if ($rows >= 1):
      header('Content-type: text/xml');
      echo "<?xml version='1.0' encoding='utf-8'?>";
      echo "<Word4>";
      $row = $result->fetch_array();
      $ans = $row["word"];
      echo "<value>$ans</value>";
      echo "</Word4>";
   else:
      die ("DB Error");
   endif;

   $query = "select word from Words order by rand() limit 1";
   $result = $db->query($query);
   $rows = $result->num_rows;
   if ($rows >= 1):
      header('Content-type: text/xml');
      echo "<?xml version='1.0' encoding='utf-8'?>";
      echo "<Word5>";
      $row = $result->fetch_array();
      $ans = $row["word"];
      echo "<value>$ans</value>";
      echo "</Word5>";
   else:
      die ("DB Error");
   endif;
?>

单击按钮不执行任何操作

0 个答案: