image issues?

[lukeurtnowski]

I have 6 images stored into a datebase (their URL)
(bottom of) http://www.scasp.com/testing/request.shtml
I am trying to figure out how to ensure the pictures are either in jpg, gif, png format (should I include bmp, tiff?) And then how can I auto resize the image(s) so I can create some sort of image viewing function (gallery) with all the images the same size, or of a certain width?
Thanks

[Houdini]

Use a regex to eliminate anything but what you want like so;

<?php 
$url="http://somewhere.com/images/test.jpeg";
if (preg_match("/(.+?).(gif|jpg|jpeg)/i",$url)){
//you can do what you want here  

echo $url. "<br /> Is a jpeg or jpg or gif.";
}
	else {
	//it failed so do something like below  

  	echo$url."<br /> Is not a jpeg or jpg or gif.";
  	echo "<br />";
  	//echo why is this question in the database section?
	}
 ?>

[lukeurtnowski]

OK, If I understand you correctly, (Im not the greatest of php coders)
Would this work on the form page

if (preg_match("/(.+?).(gif|jpg|jpeg)/i",$_POST('Photo1')) {
how do I submit the form?
} else {
echo "<p><font color='red'>The photo must either be in gif or jpg format</font></p>";
dont submit the form & allow user to try again?
}

[jheitz]

To auto-resize images (an example to autoresize to a maximum width or height of 100, the image proportions will be kept)

Also, this code will save all images as "./images/mini.jpg", you need to change that to the specified location & filename:

$width = 100;
$height = 100;

$source = imagecreatefromjpeg($url);

list($width_orig, $height_orig) = getimagesize($uploadfile);

if ($width && ($width_orig < $height_orig)) {
   $width = ($height / $height_orig) * $width_orig;
} else {
   $height = ($width / $width_orig) * $height_orig;
}

$miniImg = imagecreatetruecolor($width, $height);
imagecopyresampled($miniImg, $source, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);

imagejpeg($miniImg, "./images/mini.jpg", 100);

Hope this helps