Accept image by URL

Question

I got input in my website, The input is suppose to get image URL, What is want to validate is:

Am i getting an image?
Is it 64x64?
Image type png/jpg/gif/etc?

The best solution for All the terms above i was thinking about is getimagesize.

If anyone can think of more terms for validating and better solution i will be very thankfull, Thank you all and have a nice day.

score 2 · Answer 1 · answered Oct 05 '13 at 08:32

2

this is php code for checking format (say www.example.com/image.png)

$url = "some url";
$format = substr($url , -3);
if($format == "png" || $format == "jpg" || $format == "gif")
    print "right";
else
    print "wrong";

answered Oct 05 '13 at 08:32

mamal

69
4

Thank you mamal, I will wait for more solutions. – Aviel Fedida Oct 05 '13 at 08:34
1

Note that this may not necessarily always work; I could take a `.gif` and rename it to `.jpg` for example. – Codecat Oct 05 '13 at 08:36

Ajith S · Accepted Answer · 2013-10-05T08:55:20.990

2

For the first ,

You could use getimagesize() which returns zeros for size on non-images.

For the second,

$imageName = $_FILES['upload']['name'];
list($width, $height, $type, $attr) = getimagesize($imageName);

you can check condition with $width and $height

For the third,

$imageName = $_FILES['upload']['name'];
$ext = pathinfo($imageName, PATHINFO_EXTENSION);// alternative method

You could use $type from second to check extention

With $ext you can check extention of image

Here is link for you http://www.phpeasystep.com/phptu/25.html

So in altogether you could simply use getimagesize() for these 3 conditions

edited Oct 05 '13 at 08:55

answered Oct 05 '13 at 08:33

Ajith S

2,907
1
18
30

My database i storing the URL I am not uploading the image, Do you think i should upload it?. – Aviel Fedida Oct 05 '13 at 08:39
If it is in database, just specify the `url` in `$imageName` retrieved from database – Ajith S Oct 05 '13 at 08:42
I understand what you mean but, Do you think i should upload the images to my server? – Aviel Fedida Oct 05 '13 at 08:46
If you need to validate before uploading to server, you could do it with client side scripts – Ajith S Oct 05 '13 at 08:48
I can, But if some one turn JS off, I should always add server side validation. – Aviel Fedida Oct 05 '13 at 08:49
It is better to validate with server script as well, check this link http://stackoverflow.com/questions/15855770/why-do-we-need-both-client-side-and-server-side-validation – Ajith S Oct 05 '13 at 08:54

Accept image by URL

2 Answers2