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Question

I have an array of numbers and would like to create a check box for each element in the array. Once the submit button is pressed the check boxes which were selected will be displayed. Is there a way to do this?

PHP code :

<?php

    $arr = array("1","2","3","4");

    //Create a checkbox for each array element
    foreach($arr as $index=>$value)
    {
    echo ' <input type="checkbox" name = "checkb[]"value="'.$value.'">'; 

    }

    echo'<input type = "submit" name = "submit" value = "submit">';

    if(isset($_POST['submit'])){
    foreach($_POST['checkb'] as $checkb)
    {
    echo $checkb." ";
    }
    }
    ?>

Answer 1

you dont have any form to post checkbox value, use form tag and, you can use in_array() for checked checkbox:

<?php

    $arr = array("1","2","3","4");

    //Create a checkbox for each array element
    foreach($arr as $index=>$value)
    {
    echo '<form action="" method="post">';
    echo ' <input type="checkbox" name = "checkb[]"value="'.$value.'">'; 

    }

    echo'<input type = "submit" name = "submit" value = "submit"></form>';

    if(isset($_POST['submit'])){
    foreach($_POST['checkb'] as $checkb)
    {
     if(in_array($checkb,$arr))
    {
    echo '<input type="checkbox" name = "checkb[]"value="'.$checkb.'" checked>';
    }
    }
    }
    ?>