RE: Why is PHP unable to access my select list values?
| From: | Reginald Alex Mullin | Date: | Thu, 04 Jul 2002 23:30:40 +0000 |
| Subject: | RE: Why is PHP unable to access my select list values? | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-105513@lists.php.net to get a copy of this message | ||
Gurus,
I've finally figured out why the "managers[]" array wasn't being passed in
the form's query string: like every form select list, I had to first select
the options in the end-user created "managers[]" select list for them to be
appear in the form's query string and therefore be accessible by PHP. The
solution was to write a JavaScript function (called "selectOptions") that
would select the options in the "managers[]" select list prior to the form's
submission. See the modified HTML/JavaScript code below for an example (the
"return false;" statement in the form's onSubmit attribute is there only to
verify that the JavaScript "selectOptions" function works).
*********
HTML/JavaScript code starts
**********
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>UPLOADS</title>
<script language="javascript" type="text/javascript">
<!-- begin hide
function onOptions(formName,toFieldName,fromFieldName){
var deptIndex = document[formName][fromFieldName].selectedIndex;
if (deptIndex>0){
selectedArea = document[formName][fromFieldName];
}
for (j=1;j<selectedArea.length;j++){
var noError = true;
if (selectedArea.options[j].selected){
selectedText = selectedArea.options[j].text;
selectedValue = selectedArea.options[j].value;
for (i=1;i<document[formName][toFieldName].length;i++){
if (document[formName][toFieldName].options[i].value ==
selectedValue){ //duplication
alert("Duplication: " + selectedText);
noError = false;
}
}
if (noError){
var len = document[formName][toFieldName].length;
document[formName][toFieldName].options[len] = new Option(selectedText,
selectedValue);
}
}
}
}
function offOptions(formName,fieldName){
for (i=1;i<document[formName][fieldName].length; i++){
if (document[formName][fieldName].options[i].selected){
document[formName][fieldName].options[i] = null;
i--;
}
}
}
var fieldNames = new Array();
function selectOptions(formName,fieldNames){
for (k=0;k<fieldNames.length;k++){
document[formName][fieldNames[0]].options[0].selected = false;
for (i=1;i<document[formName][fieldNames[k]].length; i++){
if (document[formName][fieldNames[k]].options[i].value){
document[formName][fieldNames[k]].options[i].selected = true;
}
}
}
}
// end hide-->
</script>
</head>
<body>
<table width="530" cellpadding="0" cellspacing="0"
border="0">
<form name="formName" enctype="multipart/form-data" action="<?php
echo $PHP_SELF; ?>" method="post"
onsubmit="selectOptions('formName',['managers[]']); return false;">
<input type="hidden" name="MAX_FILE_SIZE" value="102400">
<tr>
<td width="530" height="25" valign="top"
colspan="2"><font class="required">*</font>
<b>File:</b><br><input
type="file" name="file" value="" size="68"></td>
</tr>
<tr>
<td width="530"
valign="top">Description:<br><textarea name="file_description"
cols="79"
rows="5">An internal file for authorized administrators
only.</textarea></td>
</tr>
<tr>
<td width="530" valign="top">
<table width="530" cellpadding="0"
cellspacing="0" border="0">
<tr>
<td width="530" valign="top"
colspan="3">choose managers</td>
</tr>
<tr>
<td width="530" valign="top"
colspan="3">
<select
name="list_managers" size="5" multiple>
<option
value="">----------------------------------</option>
<option
value="1">test 1</option>
<option
value="2">test 2</option>
<option
value="3">test 3</option>
</select>
<a
href="javascript:onOptions('formName','managers[]','list_managers');">ADD</a
> | <a
> href="javascript:offOptions('formName','managers[]');">REMOVE</a>
<select
name="managers[]" size="5" multiple>
<option
value="">----------------------------------</option>
</select>
</td>
</tr>
<tr>
<td width="530" valign="top"
colspan="3">Hold down CTRL key to select mutiple members</td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="30" valign="top"
colspan="2"> </td>
</tr>
<tr>
<td valign="top" colspan="2">
<input type="submit" name="submit"
value="UPLOAD FILE">
<input type="reset" name="reset"
value="RESET">
<br>
<font class="required">*</font> <b>x:</b> =
required form field.
</td>
</tr>
<tr>
<td height="30" valign="top"
colspan="2"> </td>
</tr>
</form>
</table>
</body>
</html>
*********
HTML/JavaScript code stops
**********
O C:\DOS
\-> C:\DOS\RUN
/\ RUN\DOS\RUN
-----Original Message-----
From: Reginald Alex Mullin [mailto:ram@iamhewhois.org]
Sent: Tuesday, July 02, 2002 7:34 PM
To: 'php-general@lists.php.net'
Subject: Why is PHP unable to access my select list values?
Gurus,
I've created the following file (see HTML/JavaScript code below) which
allows end-users to dynamically (on the client-side) move items from one
form select list (called "list_managers" to another (called simply
"managers[]"). When, however, I attempt to access the end-user created
"managers[]" form select list with PHP, I'm unable to do so! My testing
(using the empty and isset functions) revealed that the "managers[]" array
shows up as being empty, even though items were added to it from the
"list_managers" select list prior to the form's submission. Has anyone
encountered this problem before? What am I doing wrong here? Are there any
suitable workarounds?
P.S. Thank you, in advance, for all of your help and cooperation.
O C:\DOS
\-> C:\DOS\RUN
/\ RUN\DOS\RUN