如何选中和禁用复选框？

Question

I have tried:

<input disabled='disabled' 
checked='checked' 
type='checkbox' 
name='checkTema[]' 
value=".$cat->cat_ID."> ".$cat->name."<br>"

But that won't pick up the value when I send the form

UPDATE

Thanks to a comment I've got a helping answer from another SO question, yet I am not sure how I should be applying the trick, tried the following but not sending the value

echo "<input type='hidden' name='checkTema[]' value='1' >";
echo "<input type='checkbox' checked='checked' disabled='disabled' name='checkTema[]' value=".$cat->cat_ID."> ".$cat->name."<br>";

Answer 1

If you need to POST disabled checkboxes, I suggest using a hidden input before:

<input type="hidden" name="checkbox_disabled" value="<?php echo $checkbox_value; ?>" /> <== Checked and disabled

Then in your PHP code, you can simply check:

if ($_POST['checkbox']) {
  //Checkbox wasn't disabled on submission
} else {
  //Fallback to using the disabled value:
  $disabledVal = $_POST['checkbox_disabled'];
}

Additionally, you can simply undisable all the elements of the form before submission:

$('form').submit(function() {
    $(this).find('input').attr('disabled', false);
});

See this question/answer for more information on how you can alternatively do this.