You can try using JQUERY, put this in your head tag
:
<head>
<script src="https://stackoverflow.com/questions/23381099/jquery-1.11.0.min.js"></script>
</head>
Then below your head, to set Checked:
function setChecked(string checkbox)
{
$("#" + checkbox).prop('checked', true);
}
to Uncheck:
function setChecked(string checkbox)
{
$("#" + checkbox).prop('checked', false);
}
Call these methods in your PHP.
Good luck.
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solved How to change property of checkboxes from a checkbox?