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set default check in a 'checkbox' form

Discussion in 'Programming' started by byoung, Aug 23, 2006.

  1. #1
    Working with a form that generates checkbox options from a database. I want to set a default option as checked (ticked).
    SEMrush
    Does anyone know if i can do it or how to do it.
     
    byoung, Aug 23, 2006 IP
    SEMrush
  2. ccoonen

    ccoonen Well-Known Member

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    #2
    when you are writing the checkbox - create a variable before it that is equal to "" then do an if statement to see if it should be checked. If it is - then set your variable = " checked "

    then when you write your (x)html just enter that variable which is either equal to "" or equal to " checked "
     
    ccoonen, Aug 23, 2006 IP
  3. drewbe121212

    drewbe121212 Well-Known Member

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    #3
    
    // DB pull
    $query = mysql_query("select value FROM ...");
    $checked;
    if ($row = mysql_fetch_assoc($query))
    {
        if (isset($row['value']))
        {
            $checked = "checked";
        }
    }
    <input type="checkbox" name="value" id="value" {$checked}>
    
    PHP:
     
    drewbe121212, Aug 25, 2006 IP
  4. phulla

    phulla Peon

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    #4
    Use the following, obviously change to suit:

    
    <input type="checkbox" name="chkName" id="chkName" <?= ( isset($row[0]) ? ' checked="checked"' : '') ?> />
    
    PHP:
    or if you need the form to remember the values of a checkbox (or any other field)

    
    <input type="checkbox" name="chkName" id="chkName" <?= ( isset($_REQUEST['chkName']) ? ' checked="checked"' : '') ?> />
    
    PHP:
     
    phulla, Feb 13, 2008 IP
    toniya likes this.