Create multiple checkboxes php

Question

I am trying to create a student attendance table that contains a checkbox for each students attendance, that is to be stored in a database.

This is my table that I have so far, that is executed from an ajax function call. Most of the data is from a database, that contains student names.

For the sake of this example $numStudent = 5;

echo '<form method="post" action="checkAttend.php"> 
    <table border="1">';
$count = 1;

while(($count < $numStudent) && ($students = mysqli_fetch_assoc($result))) {
    echo '<tr>
        <th>' . $count. '</th>
        <th>' . $students['student_name'] . '</th>
        <th> <input type="checkbox" name="students[]" /> </th>
    </tr>';
    $count++;
}

echo '<th colspan = "3">
    <input type="submit" name="button" id="button" value="Submit" /> </th>';
echo '</table>';
echo '</form>';

In checkAttend.php The form prints exactly the way I need it to, but when I try to print out the values in the checkbox array (to check what values are contained within before saving it to the database) each value in the array prints out :

$student_attend[0]       A
$student_attend[1]       r
$student_attend[2]       r
$student_attend[3]       a
$student_attend[4]       y

Typically I want to store some kind of value in the corresponding field in the database to indicate if the student is absent or not.

I cant tell if I am doing the checkbox loop correctly or not or if I need to add in more stuff.

gotnull · Accepted Answer · 2016-07-05 04:34:19Z

1

You'll want to loop through the $student_attend array like the following:

foreach ($student_attend as $value) { 
  // do something with $value
}

More info on foreach here.

answered Jul 5, 2016 at 4:34

gotnull

27.2k23 gold badges143 silver badges207 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

PHP Geek · Accepted Answer · 2016-07-05 04:55:37Z

If you want to add dynamic data with your checkboxes, then you can use it as follows: Inside the form tag you can use

    <form method="post" action="checkAttend.php"> 
    <table border="1">
    <?php
    $count=1;
    while($students = mysqli_fetch_assoc($result)) {
     ?>
     <tr>
      <th><?php echo $count;?></th>
      <th><?php echo $student['student_name']; ?></th>
      <th><input type="checkbox" name="students[]" value=<?php echo $student['student_id']; ?>/></th>
     </tr>
     <?php
    }
    ?>
</table>
</form>

and in checkAttend.php page write the following code:

if(isset($_POST['button'])){
  if(count($_POST['student_id'])>0){
   foreach($_POST['student_id'] as $student_id){
    mysql_query("update table_name set column_name = '1' where student_id = '".$student_id.'"); 
    // Just use the student id as checkbox value and update it as you just need the check or uncheck the checkbox.  
   }
  }
}

Collectives™ on Stack Overflow

Create multiple checkboxes php

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related