Form array variables going wrong

[Anon]

Please try this and tell me why I cannot unselect Yahoo or google without unselecting altavista - and how to fix it. Please :o)

<?
if($submit=="submit") {
$count=count($url);
for ($i=0; $i<$count; $i++) { echo "<BR>add=".$url[$i]." ".$add[$i];}
} else {
echo "<FORM METHOD=POST ACTION=".$PHP_SELF.">
<INPUT TYPE=text name=url[] value=http://www.yahoo.com>
<INPUT TYPE=text name=description[] value=Yahoo>
<INPUT TYPE=checkbox name=add[] value=1 checked><BR>
<INPUT TYPE=text name=url[] value=http://www.google.com>
<INPUT TYPE=text name=description[] value=google>
<INPUT TYPE=checkbox name=add[] value=1 checked><BR>
<INPUT TYPE=text name=url[] value=http://www.av.com>
<INPUT TYPE=text name=description[] value=av>
<INPUT TYPE=checkbox name=add[] value=1 checked><BR>
<INPUT TYPE=submit NAME=submit VALUE=submit>
</FORM>";
}
?>

[tomhath]

The array of checkboxes only contains the ones that were checked. So you have to assign them unique values to see which are in the array:

<?
if($REQUEST_METHOD == "POST") {
$count=count($add);
for ($i=0; $i<$count; $i++) { echo "<BR>add=".$url[$add[$i]]." ".$add[$i];}
} else {
echo "<FORM METHOD=POST ACTION=".$PHP_SELF.">
<INPUT TYPE=text name=url[] value=http://www.yahoo.com>
<INPUT TYPE=text name=description[] value=Yahoo>
<INPUT TYPE=checkbox name=add[] value=0 checked><BR>
<INPUT TYPE=text name=url[] value=http://www.google.com>
<INPUT TYPE=text name=description[] value=google>
<INPUT TYPE=checkbox name=add[] value=1 checked><BR>
<INPUT TYPE=text name=url[] value=http://www.av.com>
<INPUT TYPE=text name=description[] value=av>
<INPUT TYPE=checkbox name=add[] value=2 checked><BR>
<INPUT TYPE=submit NAME=submit VALUE=submit>
</FORM>";
}
?>