You got it right, except you're going to have it blow up on you if
someone doesn't select something
Try these changes:
$a1 = $_POST['ch1'];
$a2 = $_POST['ch2'];
$a3 = $_POST['ch3'];
# Add this bit
If (isset($_POST['ch1')) {
$collist .= ",$a1";
}
If (isset($_POST['ch2')) {
if ($collist == "") {
$collist = $a2;
} else {
$collist .= ",$a2";
}
}If (isset($_POST['ch3')) {
if ($collist == "") {
$collist = $a3;
} else {
$collist .= ",$a3";
}
}
# Make slight changes here
if ($collist <> "") {
$query = "SELECT $collist FROM form";
[EMAIL PROTECTED] ($query);
}
Enter_Date<input type="checkbox" name="ch1" value="Enter_Date">
Opening_Units<input type="checkbox" name="ch2" value="Opening_Units">
Unit_Consumed<input type="checkbox" name="ch3" value="Unit_Consumed">
> -----Original Message-----
> From: balwantsingh [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, August 18, 2004 5:33 AM
> To: [EMAIL PROTECTED]
> Subject: [PHP] [PHP-GEN] Check Boxes
>
>
> balwantsingh wrote:
> > can somebody advise me
> > i want to use checkboxes on my website, i want that if user
> selects some
> > checkboxes (there will be more than 20 checkboxes),
> checkbox's value will
> be
> > stored in variables and than SELECT query command will be
> run using these
> > variables through PHP. but my problem is that in SELECT
> query command
> after
> > each column name comma (,) is required and if i use the
> same than it is
> > displaying "You have an error in your SQL syntax near
> 'FROM form' at line
> > 1"
>
> i am using following coding
>
> $a1 = $_POST['ch1'];
> $a2 = $_POST['ch2'];
> $a3 = $_POST['ch3'];
>
> if ($a1 or $a2 or $a3) {
> $query = "SELECT $a1, $a2, $a3 FROM form";
> [EMAIL PROTECTED] ($query);
> }
> Enter_Date<input type="checkbox" name="ch1" value="Enter_Date">
> Opening_Units<input type="checkbox" name="ch2" value="Opening_Units">
> Unit_Consumed<input type="checkbox" name="ch3" value="Unit_Consumed">
>
>
>
> balwant
>
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