隐藏文本框的发布值

Question

i have this code:

<?php
$result = mysqli_query($con,"SELECT * FROM table");

while($row = mysqli_fetch_array($result)){
echo "<input type=\"checkbox\" id=\"$row[use_id]\"  name=\"things[]\"  value='$row[col_id]' >$row[col]<br>";
echo "<input placeholder=\"description\" type=\"text\" name=\"ans1\" class='$row[col_id]' id=\"answer1\" style='display:none;'>";
echo "<align='left'><input placeholder=\"source\" type=\"text\" name=\"ans2\" class='$row[use_id]' id=\"answer2\"   style='display:none;'>";

}
?>

using this script:

<script>
$(document).ready(function(){


 $("input[type=checkbox]").change(function(){
    var divId = $(this).attr("id");

     if ($(this).is(":checked")){
        $("." + divId).show();
     }
     else{
         $("." + divId).hide();
     }
});
});
</script>

and i want to take the data from the 2 textboxes using ths code:

$checkBox = $_POST['things'];


for($i=0; $i<sizeof($checkBox); $i++){


    $qs = "INSERT INTO sccm_reherb.table2 values('$_POST[id]','".$checkBox[$i]."','$_POST[ans1]','$_POST[ans2]')";
    echo $qs;
    mysqli_query($con,$qs) or die(mysqli_error($con));
}

but '$_POST[ans1]' and '$_POST[ans2]' are always empty..can anyone help me? thanks in advance!

Answer 1

You must send ans1 and ans2 as an array to server. Not as a string.

Change your while loop to this:

while($row = mysqli_fetch_array($result)) {
    echo "<input type='checkbox' id='$row[use_id]'  name='things[$row[col_id]]'  value='$row[col_id]' >$row[col]<br>";
    echo "<input placeholder='description' type='text' name='ans1[$row[col_id]]' class='$row[col_id]' id='answer1' style='display:none;'>";
    echo "<align='left'><input placeholder='source' type='text' name='ans2[$row[col_id]]' class='$row[use_id]' id='answer2'   style='display:none;'>";
}

• Note 1: I use single quote ( ' ) in HTML attributes for better reading.
• Note 2: Pay attention to name='ans2[$row[col_id]]' (it's now an array)
• Note 3: I manually set the index of array by $row[col_id]

Now if you send this form to server, you will get such result:

Array
(
    [things] => Array
        (
            [1] => 1
            [4] => 4
        )

    [ans1] => Array
        (
            [1] => Description 1
            [2] => forbidden data by user
            [3] => forbidden data by user
            [4] => Description 4
            [5] => forbidden data by user
        )

    [ans2] => Array
        (
            [1] => Source 1
            [2] => forbidden data by user
            [3] => forbidden data by user
            [4] => Source 4
            [5] => forbidden data by user
        )

)

In the above array, all textbox has value as I wrote there forbidden data by user . This is not important, because the valid data (user has checked the checkbox) is those in things array, so in the server, you must loop by that array.

$checkbox = $_POST['things'];

if ($checkbox) {
    foreach ($checkbox as $id => $value) {
        $ans1 = $_POST['ans1'][$id];
        $ans2 = $_POST['ans2'][$id];

        // to other stuff
    }
}