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编写一个PHP程序：该程序通过在页面表单设置表格的行数、列数、长度、宽度，并根据此参数在页面上绘制出表格。

img

img

<html>
  <head>
    <title>表格添加器</title>
  </head>
  <body>
    <?php
      // 定义变量并初始化为空字符串
      $width = "";
      $height = "";
      $rows = "";
      $cols = "";
      
      // 检查表单是否被提交
      if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // 从表单中获取值
        $width = test_input($_POST["width"]);
        $height = test_input($_POST["height"]);
        $rows = test_input($_POST["rows"]);
        $cols = test_input($_POST["cols"]);
      }
      
      // 处理表单数据并添加表格
      function add_table() {
        // 从全局变量中获取值
        global $width, $height, $rows, $cols;
        
        // 创建表格
        echo "<table border='1' cellpadding='5'>";
        
        // 循环添加行和列
        for ($i = 1; $i <= $rows; $i++) {
          echo "<tr>";
          for ($j = 1; $j <= $cols; $j++) {
            echo "<td width='$width' height='$height'></td>";
          }
          echo "</tr>";
        }
        
        // 关闭表格
        echo "</table>";
      }
      
      // 验证用户输入
      function test_input($data) {
        $data = trim($data);
        $data = stripslashes($data);
        $data = htmlspecialchars($data);
        return $data;
      }
    ?>
    
    <h2>表格添加器</h2>
    
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
      <table border="0" cellpadding="0">
        <?php
          // 添加5行文本框
          for ($i = 1; $i <= 5; $i++) {
            echo "<tr><td><input type='text' name='width' value='$width' size='3'></td>";
            echo "<td>x</td>";
            echo "<td><input type='text' name='height' value='$height' size='3'></td>";
            echo "<td><input type='text' name='rows' value='$rows' size='3'></td>";
            echo "<td>x</td>";
            echo "<td><input type='text' name='cols' value='$cols' size='3'></td></tr>";
          }
        ?>
      </table>
      <br>
      <input type="submit" name="submit" value="确定">
      <input type="button" value="重置" onclick="location.href='<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>'">
    </form>
    
    <?php
      // 检查是否提交了表单
      if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // 添加表格
        add_table();
      }
    ?>
    
  </body>
</html>

根据需求你自己调整

<!DOCTYPE html>
<html>
<head>
    <title>绘制表格</title>
</head>
<body>
<form method="post">
    <label>表格行数：</label>
    <input type="number" name="rows" min="1"><br><br>
    <label>表格列数：</label>
    <input type="number" name="cols" min="1"><br><br>
    <label>表格长度：</label>
    <input type="number" name="width" min="1"><br><br>
    <label>表格宽度：</label>
    <input type="number" name="height" min="1"><br><br>
    <input type="submit" name="submit" value="绘制表格">
</form>

<?php
if (isset($_POST['submit'])) {
    // 获取表单参数
    $rows = $_POST['rows'];
    $cols = $_POST['cols'];
    $width = $_POST['width'];
    $height = $_POST['height'];

    // 绘制表格
    echo '<table border="1">';
    for ($i = 1; $i <= $rows; $i++) {
        echo '<tr>';
        for ($j = 1; $j <= $cols; $j++) {
            echo '<td width="' . $width . 'px" height="' . $height . 'px"></td>';
        }
        echo '</tr>';
    }
    echo '</table>';
}
?>
</body>
</html>