PHP - Checkbox values is displayed in the textbox in edit form - php

Question

I have made an edit form on a bunch of checkboxes and a textbox.
Here is my code
<?php
require("config.php");
$id = $_GET['id'];
$sql = "SELECT * FROM contracts WHERE id= '$id'";
$result = $con->query($sql);
while ($row = $result->fetch_assoc())
{
$subunit = explode(',',$row['subunit']);
?>
<form action="" method="GET">
ID: <?php echo $id; ?><br>
<input type="hidden" name="id" value="<?php echo $id; ?>" />
Sub-Category Unit:
<input type="checkbox" name="subunit[]" value="OFL" <?php in_array('OFL', $subunit) ? print "checked" : ""; ?>>OFL
<input type="checkbox" name="subunit[]" value="HVTL" <?php in_array('HVTL', $subunit) ? print "checked" : ""; ?>>HVTL
<input type="checkbox" name="subunit[]" value="PINS" <?php in_array('PINS', $subunit) ? print "checked" : ""; ?>>PINS
<input type="checkbox" name="subunit[]" value="FEG" <?php in_array('FEG', $subunit) ? print "checked" : ""; ?>>FEG
<input type="checkbox" name="subunit[]" value="PC" <?php in_array('PC', $subunit) ? print "checked" : ""; ?>>PC
<input type="checkbox" name="subunit[]" value="PI" <?php in_array('PI', $subunit) ? print "checked" : ""; ?>>PI<br> &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp
Others:
<input type="text" name="subunit[]" value="<?php echo $row['subunit']; ?>"/>
<br><br>
<input type="submit" name="edit" value="Update" />
</form>
<?php
}
if(isset($_GET['edit']) ){
$subunit = isset($_GET ['subunit']) ? implode(",", $_GET['subunit']) :null;
$upd= "UPDATE `contracts` SET `subunit` = '$subunit' WHERE `id` = '$id'";
if($do_upd = $con->query($upd)) {
echo "Update Success<br>";
echo "$upd <br>";
echo "$do_upd <br>";
echo "<a href='viewcheck.php?id=$id'>View</a>";
} else {
echo "Update Fail<br>";
echo "$upd <br>";
echo "$do_upd <br>";
echo "<a href='viewcheck.php?id=$id'>View</a>";
}
}
?>
The code is working fine. When I went back to the edit form again after I have updated the data, it looks something like this.
I don't want all the checkbox values to be displayed in the textbox. Yet I want to use the same attribute for both checkbox and textbox. How do I do this?

Answer 1

Inside the while loop below the line $subunit = explode(',',$row['subunit']); need to place this code:
$array_all=array('OFL','HVTL','PINS','FEG','PC','PI');
$a=array_values(array_diff($subunit,$array_all));
$a will give you the values for Others text field. You need to replace the value of Others as:
<input type="text" name="subunit[]" value="<?php echo $a[0]; ?>"/>