View Full Version : Gd2
pete3005
07-30-2002, 01:36 PM
I would like to make a suggestion that you upgrade to GD2 so we can make use of some of the new image functions that are not available in the versions < GD2 :)
TIA
Pete
harmonic
07-30-2002, 03:19 PM
does gd2 have *.gif support?
i was writing a script earlier that uploaded an image and checked the dimensions... but it would only support jpegs...
pete3005
07-30-2002, 03:31 PM
Hi Harmonic,
Yes it does, but for checking image size you do not need GD installed anyway.
Use the PHP GetImageSize() function, that works with any GIF, JPG, PNG, SWF, PSD, TIFF or BMP image files.
Here is an example (just incase you don't know):
$filename = "images/holidayphoto.jpg";
$data = getimagesize($filename);
This returns an numerative array where:
$data[0] = width in pixels
$data[1] = height in pixels
$data[2] = filetype index (e.g. 1 = image/gif, 2 = image/jpeg, etc.)
$data[3] = HTML attributes (e.g. height="y" width="x")
To get an image size in a page I made this class
<?php
class MyImage
{
//set my variables for this class
var $imagename;
var $imagewidth;
var $imageheight;
var $imagealt;
//start contructor function that excutes when called
function MyImage($myimagename,$imalt)
{
echo "<img src=\"";
echo $this->imagename = $myimagename;
echo "\"";
$this->imagewidth = getimagesize("$myimagename");
echo " width=\"";
echo $this->imagewidth[0];
echo "\"";
$this->imageheight = getimagesize("$myimagename");
echo " height=\"";
echo $this->imageheight[1];
echo "\"";
echo " alt=\"";
echo $this->imagealt = $imalt;
echo "\" border=\"0\">";
}
//end class
}
?>
Then call is like this:
<?php
$showimage = @new
MyImage("prodimages/".$stdetail->Image,$stdetail->Name);
?>
The first argument is the image location and name, in the above case, it comes from MySQL, the second argument is the alt text which is coming from MySQL too.
That outputs:
<img src="prodimages/6768d.jpg" width="250" height="220" alt="Diamond channel set eternity ring" border="0">
HTH
Pete
harmonic
07-30-2002, 03:38 PM
thanks for the input.. i was using imagesx() and imagesy().. ill try out what you said
harmonic
07-30-2002, 04:52 PM
thanks :D worked like a charm
function checkwh($loc){
$props = getimagesize($loc);
if($props[0] > 50 || $props[1] > 50){
return FALSE;
} else {
return TRUE;
}
}
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