簡單的布爾函數

Question

我目前有一張表格，當前顯示有關患者的信息並計算他們的等待時間。

我在患者表中有一個布爾值;

Name  Type  Value 
Examined Tinyint(1) 0 

我想在表中的每一行，它允許用戶選擇，如果病人已經研究了簡單的勾選框功能;如果勾選框，那麼該行將從表中消失，但不是數據庫。

我該怎麼做？

這裏是我的代碼：

<?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> 

提前感謝！

Answer 1

這是更好地使用JOIN從另一個表 添加一些字段可以選擇其中審議TINYINT唯一行（1）0是零，最好是使用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>