Question

这是我的问题，差不多一个星期，我无法解决。

情景：

在我保存数据之前，会出现一条确认消息，说明...... Station is full. do you want to continue saving? ...然后当我尝试取消它时，它仍然保存数据..

按下CANCEL按钮，它将不再保存....

假设我有一个建筑物名称：Star 1和Star 2 ......

“Star 1”，“Star 2”将是 $ bldg 的值...然后是<的持续时间< em> STAR 1是08:00:00 [已经满了] ，然后 STAR 2是00:00:00 [数据库中尚不存在]

这是我的代码：

if (isset($_GET['js_varOK'])) 
$cancel = $_GET['js_varOK'];
else $cancel = "not";

    if($cancel != "yes")
    {
        for($i=0; $i<sizeof($bldg);$i++)
        {
        if($cancel != "yes")
        {   
        $result = mysql_query("SELECT * FROM tbldata WHERE  fldNetname = '".$network."' AND fldBldgName = '".$bldg[$i]."'  AND  fldWeek = '".$week."' AND fldMonth = '".$month."'  AND fldYear ='".$year."' ORDER BY id desc");
        if(mysql_num_rows($result)==0)
        {
        $totalduration = "";
        $seconds = 0;
        $minutes = 0;

        $computeSecMin = $seconds * $minutes; 
        $subSecMin = $computeSecMin + $duration; 
        $getMin = floor($subSecMin/60); 
        $getSec = $subSecMin%60; 
        $totalduration = $getMin .":". $getSec; 
        $query2 = "INSERT INTO tbldata(fldNetname,fldBldgName,fldPlaylist,fldMonth,fldWeek,fldYear,fldDuration,fldFrom,fldTo,fldTotalDuration,fldTimestamp,fldStatus, fldUser) VALUES ('".$network."','".$bldg[$i]."','".$AdName."','".$month."','".$week."','".$year."','".$duration."','".$from."','".$to."', '".$totalduration."','".$date."','".$status."',(SELECT fldid from tblmembers where fldUsername= '".$_SESSION['user']."'))";
        mysql_query($query2) or die (mysql_error());    

        echo "<script type='text/javascript'>\n";
        echo "alert('Data have been saved first!');\n";
        echo "</script>";       
        }
        else
        {
        while ($row = mysql_fetch_array($result))
        {
        if($network == "Mass and Mobile" && $row[fldTotalDuration]  == "08:00:00"  && $duration >= "0 s")
        {?><?php
        if(sizeof($bldg) == 1)
        {
        echo "<script type='text/javascript'>\n";
        echo "alert('$bldg[$i] station is already full.');\n";
        echo "window.location='booking_content.php'";
        echo "</script>";
        }
        else
        { ?>
        <script>
        var myVar = "station is already full. Do you want to save the other networks?";
        var js_varOK;
        var bldg;
        var network;
        if (confirm(myVar)) 
        {
        js_varOK = "no";
        bldg = "<?php echo $bldg?>";
        network= "<?php echo $network?>";
        window.location = "?js_varOK=" + js_varOK + "&bldg="+bldg + "&network="+network;
        } else 
        {
        js_varOK = "yes";
        window.location = "?js_varOK=" + js_varOK;

        }
        </script>
        <?php
        }

        }
        }

    }
    else
    {
       //do noothing
    }

所以，当我点击CANCEL时，它只会转到else of do nothing ...但它仍在保存..

根据我的理解...... STAR 1将是第一个读取for循环的程序，然后它将转到"if($network == "Mass and Mobile" && $row[fldTotalDuration] == "08:00:00" && $duration >= "0 s")"然后会出现一个弹出消息然后我会点击取消按钮然后$cancel的值已经是“是”，那么STAR 2已经保存在我的数据库中，应该停止程序在取消点击时保存它....

感谢..

Answer 1

在两种情况下都设置了变量$_GET['js_varOK'] 。如果你不想保存的话，它只是空的。

尝试这样证明：

if (isset($_GET['js_varOK']) && $_GET['js_varOK'] != '') { // better way: .. && $_GET['js_varOK'] == 'yes'
    echo 'save';
} else {
    echo 'dont save';
}

我建议稍微清理你的代码。使用

if ($a == $b) {
    echo 'yes';
} else {
    echo 'no';
}

而不是

if ($a == $b) echo 'yes';
else echo 'no';

这只是一点点代码，但不容易出错。

Javascript：按下CANCEL按钮仍然保存数据

1 个答案: