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| Title : |
'multiple select box' code that also keeps the options selected for you (as
opposed to clearing them like other code fragments illustrate). |
| Categories : |
PHP, HTML and PHP |
Daevid Vincent |
| Date : |
Jul 20th 2000 |
| Grade : |
3 of 5 (graded 18 times) |
| Viewed : |
24995 |
| File : |
No file for this code example. |
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| Search : |
More code by Daevid Vincent |
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| Action : |
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| Tools : |
My Examples List |
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This version fixes a little issue where upon first
load of the page, since the form hasn't been used, the $sel variable would
be an empty "string" and cause the 'each()' to STB. This one forces it to be
an 'array' and therefore doesn't choke.
--------------------- snip ------------------------
<HTML><HEAD><title>Using multiple select v2.1</title></HEAD>
<BODY>
<H2>Using multiple select v2.1</H2>
by <A HREF="http://daevid.com" TARGET="daevid">Daevid Vincent</A>
<?php
function inList($needle, $haystack)
{
while (list($k, $v) = each($haystack)) if ($needle == $v) return true;
return false;
}
function selectBox($size, $name, $matchArray)
{
settype($matchArray, "array"); //we have to force this because on the first pass,
this is set to string and will STB.
echo "<select multiple name='".$name."[]' size='".$size."'>\n";
for ($x = 0; $x < 5; $x++)
{
echo "\t<option value='key".$x."'";
if (inList("key".$x, $matchArray)) echo " SELECTED";
echo ">Value ".$x."\n";
}
echo "</select>";
} //selectBox()
////////////////////////////////////////////////////////////////////////
$num_selected = count($sel);
print "<P>Number of Values selected: $num_selected<p>\n";
if ($num_selected)
{
echo "<P>while list version<BR>\n";
while (list($k, $v) = each($sel))
{ echo "sel[".$k."] == ".$v."<BR>\n"; }
}
?>
<form method="post">
<?php selectBox(6,sel,$sel); ?>
<br>
<input type=submit value="Submit">
</form>
</BODY></HTML> |
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