Re: Anyone Up?
| From: | Lars Torben Wilson | Date: | Fri, 01 Feb 2002 09:52:36 +0000 |
| Subject: | Re: Anyone Up? | ||
| References: | 1 2 3 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-83093@lists.php.net to get a copy of this message | ||
On Thu, 2002-01-31 at 23:37, jtjohnston wrote:
> Niklas,
> Bingo. I wondered if it was somehting like that? Same thing in JS more or
> less.
> Thanks,
> John
eval() will work here, but it's overkill--it's a very expensive
operation. You should avoid it whenever you can. A better way is to put
everything into an array:
In the form generation bit, use something like this:
echo '<input type="checkbox"
name="check[' . $mydata->id . ']"
value="' . $mydata->yourname . '">
Then when the form is submitted, you'll have an array named $check
containing any checked values. Here's a quick test script (change
$_POST to $HTTP_POST_VARS if your PHP is older than 4.1.0):
---test.php---
<form action="test.php" method="post">
Billy Bob: <input type="checkbox" name="check[Billy Bob]"
value="BB"><br />
Betty Sue: <input type="checkbox" name="check[Betty Sue]"
value="BS"><br />
Jethro: <input type="checkbox" name="check[Jethro]"
value="JETHRO"><br
/>
<input type="submit">
</form>
<pre>
<?php
error_reporting(E_ALL);
if (isset($_POST['check'])) {
foreach ($_POST['check'] as $name) {
echo "Checked: $name\n";
}
}
?>
</pre>
---test.php---
The wrapping probably will get screwed up in the above, but the idea
should be clear.
Hope this helps,
Torben
> > eval() is your solution.
> >
> > for ($i = 1; $i <= $NMax; $i++)
> > {
> > $variable = "\$Check$i";
> > eval("\$string = \"$variable\";");
> > echo $string."<br>";
> > }
> >
> > Niklas
> >
> > -----Original Message-----
> > From: jtjohnston [mailto:taylorjo@collegesherbrooke.qc.ca]
> > Sent: 1. helmikuuta 2002 9:16
> > To: php-general@lists.php.net
> > Subject: [PHP] Anyone Up?
> >
> > Anyone Awake? Up?
> >
> > I'm using 12 checkboxes
> >
> > <INPUT TYPE="checkbox" NAME="Check1" VALUE="Your
> > Name">
> >
> > dynamically generated by mysql. Each has an id as primary index so I do
> > this:
> >
> > <INPUT TYPE=\"checkbox\" NAME=\"Check".$mydata->id."\"
> > VALUE=\"".$mydata->yourname."\">
> >
> > When I submit, I want to echo to see if anyone clicked on them. But I
> > can't get my variable right to find $check1 through $check12. How do I
> > express in a for loop. $Check.$i does not work of course!
> >
> > for ($i = 1; $i <= $NMax; $i++)
> > {
> > echo $Check.$i"<br>";
> > }
> >
> > :) Help
> >
> > --
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--
Torben Wilson <torben@php.net>
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