Question

我已经为PHP考试大厅安排了座位设置。大厅名称由用户手动提供，它应该在表格列中查看，其中作为来自mysql数据库的寄存器号，值应按行在逻辑上查看，两者必须同时完成。如何实现

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<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Move from one select box to another</title>
        <style type="text/css">
            select {
                width: 200px;
                float: left;
            }
            .controls {
                width: 40px;
                float: left;
                margin: 10px;
            }
            .controls a {
                background-color: #222222;
                border-radius: 4px;
                border: 2px solid #000;
                color: #ffffff;
                padding: 2px;
                font-size: 14px;
                text-decoration: none;
                display: inline-block;
                text-align: center;
                margin: 5px;
                width: 20px;
            }
       </style>
       <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
       <script>
            function displayCount() {
                var count =  $('#from option').length;
                document.getElementById("countFrom").value=count;
                var count2 =  $('#to option').length;
                document.getElementById("countTo").value=count2;
            }

            function moveAll(from, to) {
                $('#'+from+' option').remove().appendTo('#'+to); 
                var count =  $('#from option').length;
                document.getElementById("countFrom").value=count;
                var count2 =  $('#to option').length;
                document.getElementById("countTo").value=count2;
            }

            function moveSelected(from, to) {
                $('#'+from+' option:selected').remove().appendTo('#'+to); 
                var count =  $('#from option').length;
                document.getElementById("countFrom").value=count;
                var count2 =  $('#to option').length;
                document.getElementById("countTo").value=count2;
            }

            function selectAll() {
                $("select option").attr("selected","selected");
                var count =  $('#from option').length;
                document.getElementById("countFrom").value=count;
                var count2 =  $('#to option').length;
                document.getElementById("countTo").value=count2;
            }

            function getValues() {
                var hallName="";
                var tex = $( "#to option:selected" ).text(); 
                var count3 =  $('#to option').length;

                var x=document.getElementById("to");
                for (var i = 0; i < x.options.length; i++) {
                    if(x.options[i].selected ==true){
                        // alert(x.options[i].value);
                        hallName += x.options[i].value+"-";
                    }
                }
                document.getElementById("hallName").value=hallName;
                alert(hallName);
            }
        </script>
    </head>
    <body>
        <form name="selection" method="post" onSubmit="return selectAll()">
        <input type="text" name="hallName" id="hallName" onclick="show();">
        <input type="submit" name="my_form_submit_button" value="Second Click"/>
        <body onload="displayCount();"> 
            <select multiple size="10" id="from">
                <option value="hall 1">hall 1</option>
                <option value="hall 2">hall 2</option>
                <option value="hall 3">hall 3</option>
                <option value="hall 4">hall 4</option>
                <option value="hall 5">hall 5</option>
                <option value="hall 6">hall 6</option>
                <option value="hall 7">hall 7</option>
                <option value="hall 8">hall 8</option>
                <option value="hall 9">hall 9</option>
                <option value="hall 10">hall 10</option>
            </select>
            <div class="controls"> 
                <a href="javascript:moveAll('from', 'to');" onclick="return ccfromto();"  id="get">&gt;&gt;</a> 
                <a href="javascript:moveSelected('from', 'to');" onclick="return ccfromto();" id="get">&gt;</a> 
                <a href="javascript:moveSelected('to', 'from');" onclick="return ccfromto();" id="get">&lt;</a> 
                <a href="javascript:moveAll('to', 'from');" onclick="return ccfromto();" id="get">&lt;&lt;</a>
            </div>
            <select multiple id="to" size="10" name="topics[]"></select>
            <br></br>
            <br></br>
            <br></br>
            <br></br>
            <br></br>
            <br></br>
            <input type="text" name="countFrom" id="countFrom">
            <input type="text" name="countTo" id="countTo">
            <br>
            <input type="button" name="but" value="after moving first   click" id="but" onclick="return getValues();">
            </br>
        </form> 
        <?php
            $servername = "localhost";
            $username = "root";
            $password = "";
            $dbname = "cms";

            $conn = new mysqli($servername, $username, $password, $dbname);

            if ($conn->connect_error) {
                die("Connection failed: " . $conn->connect_error);
            }

            $sql='select  register_number from stu_master ';
            $result = $conn->query($sql);
            $count = 0;

            echo "<table>";
            echo "<tr>";
            $name=$_POST["hallName"];
            $arr1=explode("-",$name);
            $arr_length = count($arr1);
            $countRow=0;
            for ($i = 0; $i < $arr_length-1; $i++) {
                for ($j = 1; $j <= 5; $j++) {
                    if($countRow == 1) {
                        echo "</tr><br><tr>";
                        $countRow = 0;
                    }  
                    echo "<td>".$arr1[$i]." "."Row"." ".$j."</td><br>";

                    while ($show = mysqli_fetch_array($result)) { 
                        if($count == 5) {
                            echo "</tr><br><tr>";
                            $count = 0;
                        }
                        echo "<td>".$show[register_number]."</td>"; 
                        $count++; 
                    }
                    $countRow++;
                }
            } 
            echo "</tr>";
        ?>
        </table>
    </body>
</html>

示例数据

当前输出

必需输出

Answer 1

不知怎的，我管理并带来了所需的输出。我将单独发布php部分，以便对某人有用

<?php

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "cms";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

$sql='select  register_number from stu_master';
$result = $conn->query($sql);
$count = 0;
echo "<table>";
echo "<tr>";
$name=$_POST["hallName"];
$arr1=explode("-",$name);
$arr_length = count($arr1);


 $countRow=0;

 $show=array();
   while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
     $show[]= $row[register_number];
   }
$size=count($show);

echo $size;

$var=0;

 for ($i = 0; $i < $arr_length-1; $i++)
{
for ($j = 1; $j <= 5; $j++) 
{

  if($countRow == 1)
    {
      echo "</tr><br><tr>";
      $countRow = 0;
    }

     echo "<td>".$arr1[$i]." "."Row"." ".$j."</td><br>";


       echo "<td>".$show[$var+0]."</td>";
       echo "<td>".$show[$var+1]."</td>";
       echo "<td>".$show[$var+2]."</td>";
       echo "<td>".$show[$var+3]."</td>";
       echo "<td>".$show[$var+4]."</td>";

 $countRow++;
 $var=$var+5;
}

} 
echo "</tr>";
?>

以行方式查看手动值，以行方式查看mysql值

1 个答案: