upload the image of fixed width and that is 964px adn height can be of any size.

sir i want to upload the image that should have only fixed width that is 964px, i don't want to upload the image of any width.

u r saying right but by this any image can be uploaded. i want to upload only that image whose width is 960px

There is no way within the browser to know the image width.

The security of the browser does not allow you to pre-check the width.

The only way is via PHP on the server side.

You could look at using Active X, but this will limit browsers. Even then I'm not totally sure if will give you all the information you need.

yes u r absoultely right, i think u want to say like this but please modify if there is a need.

<?php
$image_folder="images/";
$filename=$_FILES['image']['name'];
$image_to_be_uploaded=$image_folder.$filename;
 
list($swidth,$sheight)=getimagesize($image_to_be_uploaded);
if($swidth=='960'){
	move_uploaded_file($_FILES['image']['tmp_name'],$image_to_be_uploaded);
}else{
	echo "wrong format";	
}
?>

                                              

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it is 964 only, further what should i do?

this is the final code i am using but when the image is not of 964px then it gives error.

<?php
$image_folder="images/";
$filename=$_FILES['image']['name'];
$image_to_be_uploaded=$image_folder.$filename;
 
list($swidth,$sheight)=getimagesize($image_to_be_uploaded);
if($swidth=='964'){
	$image_folder1="images/tn/";
	$filename1=$_FILES['image']['name'];
	echo $image_to_be_uploaded1=$image_folder1.$filename1;
	move_uploaded_file($_FILES['image']['tmp_name'],$image_to_be_uploaded1);
}else{
	echo "wrong format";	
}
?>

                                              

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the error i am getting is

Warning: getimagesize(images/11.jpg) [function.getimagesize]: failed to open stream: No such file or directory in C:\wamp\www\090807_xhtml_himcableways\admin\test\image\3.php on line 7
wrong format

when the image is not of size 964px

you need to change this line

list($swidth,$sheight)=getimagesize($image_to_be_uploaded);

to

list($swidth,$sheight)=getimagesize($_FILES['image']['tmp_name']);

it's looking up image width or the wrong file.

thnks

can we show javascript alert to the user? instead of just echoing.  it will be really fantastic.

You could replace the else block with

}else{?>
<script type="text/javascript">
alert('wrong format');
</script>
<?php
}

                                              

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it is ok but there should be a warning at the client side and not at the server side.by this it will alert but the page will post in the back which is not good.

i think you have got me.if not, then i can give the snapshot here .

do you want the fix in FF or IE

In FF its not possible(reason already mentioned by ncoo in first post). In older versions of IE i think its possible. Not sure for the latest version.

Javascript does not have permission to access the local file system. What you are asking for can only be check via the server.

Earlier browsers with poorly implemented security might have this feature (security hole) available. The number of people using a browser like this is going to be very small.

You need to upload the file to the server and check the width. Then return the message to the user.

Quote from devarticles:

Scripts are permitted access only to data in the current document or closely related documents (generally those from the same site as the current document). No access is granted to the local file system, the memory space of other running programs, or the operating systems networking layer. Containment of this kind is designed to prevent malfunctioning or malicious scripts from wreaking havoc in the users environment.

It might be worth having a look through the whole article: http://www.devarticles.com/c/a/JavaScript/JavaScript-Security/