简单的布尔函数答案

【问题标题】：Simple Boolean function简单的布尔函数
【发布时间】：2013-04-06 23:49:58
【问题描述】：

我目前有一个表格，该表格当前显示有关患者的信息并计算他们的等待时间。

我在患者表中有一个布尔值；

Name      Type       Value 
Examined  Tinyint(1) 0

我希望表格中每一行都有一个简单的复选框功能，允许用户选择患者是否已接受检查；如果选中该框，则该行将从表中消失，但不会从数据库中消失。

我该怎么做？

这是我的代码：

<?php

$conn = mysqli_connect("localhost","root","") or die ("No connection");
mysqli_select_db($conn, "a&e") or die('Could not select database.');

$query = "SELECT PatientID, Forename, Surname, Gender, Illness, Priority, Arrival_time,NOW() as now,ABS(TIMEDIFF(NOW(), Arrival_time)) as Waiting_Time FROM Patient";
$result = mysqli_query($conn, $query) or die("Invalid query"); 

/**
 * Convert number of seconds into hours, minutes and seconds
 * and return an array containing those values
 *
 * @param integer $seconds Number of seconds to parse
 * @return array
 */
function secondsToTime($seconds)
{
    // extract hours
    $hours = floor($seconds / (60 * 60));

    // extract minutes
    $divisor_for_minutes = $seconds % (60 * 60);
    $minutes = floor($divisor_for_minutes / 60);

    // extract the remaining seconds
    $divisor_for_seconds = $divisor_for_minutes % 60;
    $seconds = ceil($divisor_for_seconds);

    // return the final array
    $obj = array(
        "h" => (int) $hours,
        "m" => (int) $minutes,
        "s" => (int) $seconds,
    );
    return $obj;
}

echo "<table border='1'>
<tr>
<th>PatientID</th>
<th>Forename</th>
<th>Surname</th>
<th>Gender</th>
<th>Illness</th>
<th>Priority</th>
<th>Waiting Time</th>
<th>Examined</th>
</tr>";

while ($row = $result->fetch_object()){

//Select the  expected and discharge time for this patient.
  $query2 = "SELECT Abs(TIMEDIFF(Expected_Time,'00:00:00')) as Expected,Abs(TIMEDIFF(Discharge_Time,'00:00:00')) as Discharge ".
                "FROM priority_time ".
                "WHERE Illness = '".$row->Illness."'".
                    " AND Priority = '".$row->Priority."'".
                ";";

    $result2 = mysqli_query($conn, $query2) or die("Invalid statement: ".$query2);

    $row2 = $result2->fetch_object();
    $expected =  $row2->Expected;

    $discharge  = $row2->Discharge;

    if($expected > $discharge){
        echo "There is a problem with the database consistency, expectedTime must be less than dischargeTime!";
    }
    //Set the patient color.
    if($row->Waiting_Time <  $expected && $row->Waiting_Time <  $discharge){
        echo "<tr>";
    }
    if($row->Waiting_Time >=  $expected && $row->Waiting_Time <  $discharge){
        echo '<tr bgcolor="#FFFF00">';
    }
    if($row->Waiting_Time >  $expected && $row->Waiting_Time >  $discharge){
        echo '<tr bgcolor="#FF0000">';
    }

    //Print patient info
     echo 
      "<td>" . $row->PatientID . "</td>
      <td>" . $row->Forename . "</td>
      <td>" . $row->Surname . "</td>
      <td>" . $row->Gender . "</td>
      <td>" . $row->Illness . "</td>
      <td>" . $row->Priority . "</td>
          <td>" . gmdate("H:i:s", $row->Waiting_Time)." </td>";

    //Close row
    echo "</tr>";

}
echo "</table>";
mysqli_close($conn);
?>
</html>

提前致谢！

【问题讨论】：

你已经尝试过什么？如果您不知道：最简单的方法是与 js 库（mootools、jquery、...）取得联系，您需要一个在它应该消失时调用的函数，然后更改为 css 以让该行消失并通过 ajax (POST/GET) 向 php 文件发送请求，该文件将更新数据库
给表患者添加一个布尔值，表示他是否接受过医生检查。在表格上为用户添加一个按钮，单击以指示他们接收患者，将此布尔值更改为 true。用这种方法不能实现吗？
按钮在哪里？您有 8 x th，但每行只有 7 x td。您还需要更改查询
按钮将是一个复选框；像这样
所以如果它被打勾，那么病人已经被检查过并将布尔值更改为 true

标签： php mysql boolean

【解决方案1】：

最好使用JOIN从另一个表中添加一些字段要选择 Examined Tinyint(1) 0 为零的唯一行，最好使用 WHERE

<?php

$conn = mysqli_connect("localhost","root","") or die ("No connection");
mysqli_select_db($conn, "a&e") or die('Could not select database.');

$query = "SELECT PatientID, Forename, Surname, Gender, Illness, Priority, Arrival_time, NOW() as now, ABS(TIMEDIFF(NOW(), Arrival_time)) as Waiting_Time, Abs(TIMEDIFF(Expected_Time,'00:00:00')) as Expected,Abs(TIMEDIFF(Discharge_Time,'00:00:00')) as Discharge FROM Patient
JOIN priority_time USING (Illness, Priority)
WHERE Examined = 0";
$result = mysqli_query($conn, $query) or die("Invalid query"); 

/**
 * Convert number of seconds into hours, minutes and seconds
 * and return an array containing those values
 *
 * @param integer $seconds Number of seconds to parse
 * @return array
 */
function secondsToTime($seconds)
{
    // extract hours
    $hours = floor($seconds / (60 * 60));

    // extract minutes
    $divisor_for_minutes = $seconds % (60 * 60);
    $minutes = floor($divisor_for_minutes / 60);

    // extract the remaining seconds
    $divisor_for_seconds = $divisor_for_minutes % 60;
    $seconds = ceil($divisor_for_seconds);

    // return the final array
    $obj = array(
        "h" => (int) $hours,
        "m" => (int) $minutes,
        "s" => (int) $seconds,
    );
    return $obj;
}

echo "<table border='1'>
<tr>
<th>PatientID</th>
<th>Forename</th>
<th>Surname</th>
<th>Gender</th>
<th>Illness</th>
<th>Priority</th>
<th>Waiting Time</th>
<th>Examined</th>
</tr>";

while ($row = $result->fetch_object()){

    $expected =  $row->Expected;

    $discharge  = $row->Discharge;

    if($expected > $discharge){
        echo "There is a problem with the database consistency, expectedTime must be less than dischargeTime!";
    }
    //Set the patient color.
    if($row->Waiting_Time <  $expected && $row->Waiting_Time <  $discharge){
        echo "<tr>";
    }
    if($row->Waiting_Time >=  $expected && $row->Waiting_Time <  $discharge){
        echo '<tr bgcolor="#FFFF00">';
    }
    if($row->Waiting_Time >  $expected && $row->Waiting_Time >  $discharge){
        echo '<tr bgcolor="#FF0000">';
    }

    //Print patient info
     echo 
      "<td>" . $row->PatientID . "</td>
      <td>" . $row->Forename . "</td>
      <td>" . $row->Surname . "</td>
      <td>" . $row->Gender . "</td>
      <td>" . $row->Illness . "</td>
      <td>" . $row->Priority . "</td>
          <td>" . gmdate("H:i:s", $row->Waiting_Time)." </td>";

    //Close row
    echo "</tr>";

}
echo "</table>";
mysqli_close($conn);
?>
</html>

【讨论】：