Hello,

I have a multidim array that is generated with php and I don't
understand why/how to fix these errors:

Error: atrarr[0] has no properties
Error: atrarr[imgname] has no properties

I put an alert in the change_slide() function and it says the var
imgname is undefined however, upon viewing the php output the var
imgname is defined.

Here is the php output:

<!-- start hiding
var atrarr = new Array();
atrarr[0][0] ="01.jpg";
atrarr[0][1] =1600;
atrarr[0][2] =1063;
atrarr[1][0] ="02.jpg";
atrarr[1][1] =1600;
atrarr[1][2] =1063;
atrarr[2][0] ="03.jpg";
atrarr[2][1] =1600;
atrarr[2][2] =1063;
atrarr[3][0] ="04.jpg";
atrarr[3][1] =1600;
atrarr[3][2] =1063;
atrarr[4][0] ="05.jpg";
atrarr[4][1] =1600;
atrarr[4][2] =1063;
atrarr[5][0] ="06.jpg";
atrarr[5][1] =1600;
atrarr[5][2] =1063;
atrarr[6][0] ="07.jpg";
atrarr[6][1] =1600;
atrarr[6][2] =1063;
atrarr[7][0] ="08.jpg";
atrarr[7][1] =1600;
atrarr[7][2] =1063;
atrarr[8][0] ="09.jpg";
atrarr[8][1] =1600;
atrarr[8][2] =1063;
atrarr[9][0] ="10.jpg";
atrarr[9][1] =1600;
atrarr[9][2] =1063;
atrarr[10][0] ="11.jpg";
atrarr[10][1] =1600;
atrarr[10][2] =1063;
atrarr[11][0] ="12.jpg";
atrarr[11][1] =1600;
atrarr[11][2] =1063;
atrarr[12][0] ="13.jpg";
atrarr[12][1] =1600;
atrarr[12][2] =1063;
atrarr[13][0] ="14.jpg";
atrarr[13][1] =1600;
atrarr[13][2] =1063;
atrarr[14][0] ="15.jpg";
atrarr[14][1] =1600;
atrarr[14][2] =1063;
atrarr[15][0] ="16.jpg";
atrarr[15][1] =1600;
atrarr[15][2] =1063;
atrarr[16][0] ="17.jpg";
atrarr[16][1] =1600;
atrarr[16][2] =1063;
atrarr[17][0] ="18.jpg";
atrarr[17][1] =1600;
atrarr[17][2] =1063;
atrarr[18][0] ="19.jpg";
atrarr[18][1] =1600;
atrarr[18][2] =1063;
atrarr[19][0] ="20.jpg";
atrarr[19][1] =1600;
atrarr[19][2] =1063;
atrarr[20][0] ="21.jpg";
atrarr[20][1] =1600;
atrarr[20][2] =1063;
atrarr[21][0] ="22.jpg";
atrarr[21][1] =1600;
atrarr[21][2] =1063;
atrarr[22][0] ="23.jpg";
atrarr[22][1] =1600;
atrarr[22][2] =1063;
atrarr[23][0] ="24.jpg";
atrarr[23][1] =1063;
atrarr[23][2] =1600;
atrarr[24][0] ="25.jpg";
atrarr[24][1] =1063;
atrarr[24][2] =1600;
atrarr[25][0] ="26.jpg";
atrarr[25][1] =1600;
atrarr[25][2] =1063;
atrarr[26][0] ="27.jpg";
atrarr[26][1] =1063;
atrarr[26][2] =1600;
atrarr[27][0] ="28.jpg";
atrarr[27][1] =1063;
atrarr[27][2] =1600;
atrarr[28][0] ="29.jpg";
atrarr[28][1] =1600;
atrarr[28][2] =1063;
atrarr[29][0] ="30.jpg";
atrarr[29][1] =1600;
atrarr[29][2] =1063;
atrarr[30][0] ="31.jpg";
atrarr[30][1] =1600;
atrarr[30][2] =1063;
atrarr[31][0] ="32.jpg";
atrarr[31][1] =1600;
atrarr[31][2] =1063;

var imgnum = 09;
var imgname = "09.jpg";
var imgct = pictarr.length - 1;
function change_slide(direction) {
alert(imgname);
if(document.images) {
imgnum = imgnum + direction;
if(imgnum < imgct || imgnum > 0) {
document.getElementById("arrowprev").style.visibility =
"visible"
document.getElementById("arrownext").style.visibility =
"visible"
}
if(imgnum == imgct) {
document.getElementById("arrownext").style.visibility = "hidden"
}
if(imgnum == 0) {
document.getElementById("arrowprev").style.visibility = "hidden"
}
}
document.getElementById("slideshow").setAttribute("src", "members/
test25/8337/" + atrarr[imgname][0])
document.getElementById("caption").innerHTML = atrarr[imgname]
}
// end hiding -->

Here is the php code:

<?php
$pictarr = get_imgarr();
$atrarr = get_imgdim();
$imgfolder = get_imgdir();
$trimgnum = trim($_GET['in'], ".jpg");
?>
<script type="text/javascript" charset="utf-8">
<!-- start hiding
<?php
echo 'var atrarr = new Array();' . "\n"; // define array in
JavaScript
$count = count($pictarr);
for($i = 0; $i < $count; $i++) {
echo 'atrarr['. $i .']['. 0 .'] ="'.
$pictarr[$i] .'";'."\n";
echo 'atrarr['. $i .']['. 1 .'] ='. $atrarr[$pictarr[$i]]
["width"] .';'."\n";
echo 'atrarr['. $i .']['. 2 .'] ='. $atrarr[$pictarr[$i]]
["height"] .';'."\n";
}
?>

var imgnum = <?php echo $trimgnum; ?>;
var imgname = "<?php echo $trimgnum .'.jpg'; ?>";
var imgct = pictarr.length - 1;
function change_slide(direction) {
alert(imgname);
if(document.images) {
imgnum = imgnum + direction;
if(imgnum < imgct || imgnum > 0) {
document.getElementById("arrowprev").style.visibility =
"visible"
document.getElementById("arrownext").style.visibility =
"visible"
}
if(imgnum == imgct) {
document.getElementById("arrownext").style.visibility = "hidden"
}
if(imgnum == 0) {
document.getElementById("arrowprev").style.visibility = "hidden"
}
}
document.getElementById("slideshow").setAttribute("src", "<?php
echo $imgfolder; ?>" + atrarr[imgname][0])
document.getElementById("caption").innerHTML = atrarr[imgname]
}
// end hiding -->
</script>

neridaj [at] gmail.com wrote:
> Hello,
>
> I have a multidim array that is generated with php and I don't
> understand why/how to fix these errors:
>
> Error: atrarr[0] has no properties
> Error: atrarr[imgname] has no properties
>
> I put an alert in the change_slide() function and it says the var
> imgname is undefined however, upon viewing the php output the var
> imgname is defined.
>


You have a javascript problem - not a PHP one. Yes, the code was
generated by PHP, but that's only via echo statements, and it's incorrect.

In your function change_slide, neither imgname nor atrarr are defined.
They are only visible outside of the function.

Look at the javascript in your source code, then determine what is
needed in PHP to fix it. comp.lang.javascript can help you there.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex [at] attglobal.net
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