curl and resize remote image - php

Question

I use this script to download and resize a remote image. In the resize part something goes wrong. What is it?
<?php
$img[]='http://i.indiafm.com/stills/celebrities/sada/thumb1.jpg';
$img[]='http://i.indiafm.com/stills/celebrities/sada/thumb5.jpg';
foreach($img as $i){
save_image($i);
if(getimagesize(basename($i))){
echo '<h3 style="color: green;">Image ' . basename($i) . ' Downloaded OK</h3>';
}else{
echo '<h3 style="color: red;">Image ' . basename($i) . ' Download Failed</h3>';
}
}
function save_image($img,$fullpath='basename'){
if($fullpath=='basename'){
$fullpath = basename($img);
}
$ch = curl_init ($img);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec($ch);
curl_close ($ch);
// now you make an image out of it
$im = imagecreatefromstring($rawdata);
$x=300;
$y=250;
// then you create a second image, with the desired size
// $x and $y are the desired dimensions
$im2 = imagecreatetruecolor($x,$y);
imagecopyresized($im2,$im,0,0,0,0,$x,$y,imagesx($im),imagesy($im));
imagecopyresampled($im2,$im,0,0,0,0,$x,$y,imagesx($im),imagesy($im));
// delete the original image to save resources
imagedestroy($im);
if(file_exists($fullpath)){
unlink($fullpath);
}
$fp = fopen($fullpath,'x');
fwrite($fp, $im2);
fclose($fp);
// remember to free resources
imagedestroy($im2);
}
?>

Answer 1

When I run it, PHP gives me the following error:
Warning: fwrite() expects parameter 2 to be string, resource given ... on line 53
fwrite() writes a string to a file. You want to use the GD function imagejpeg() to save the GD resource to a file. It works for me when I change
$fp = fopen($fullpath,'x');
fwrite($fp, $im2);
fclose($fp);
to
imagejpeg($im2, $fullpath);
On an unrelated note, if all you're doing with cURL is grabbing the files, you can simply use file_get_contents() instead of cURL, assuming PHP is configured to allow full URLs in fopen functions. (I believe it is by default.) See the Notes section on the file_get_contents() manual page for more info. The function is binary-safe, so it works with images in addition to text files. To use it, I just replaced all six lines of the cURL functions with this line:
$rawdata = file_get_contents($img);
Update:
In response to your question below, you can specify a new file name for them in the array keys like so:
<?php
$img['img1.jpg']='http://i.indiafm.com/stills/celebrities/sada/thumb1.jpg';
$img['img2.jpg']='http://i.indiafm.com/stills/celebrities/sada/thumb5.jpg';
foreach($img as $newname => $i){
save_image($i, $newname);
if(getimagesize(basename($newname))){