Location: PHPKode > scripts > Image Resizing script > Resize/imagefunction.php
<?php session_start(); ob_start();

$img_size='uploadimages/'.$_FILES['image_orig']['name'];
 move_uploaded_file($_FILES['image_orig']['tmp_name'],$img_size);
 reduce_image($img_size,$_POST['resize_wid'],$img_size);
 
function reduce_image($file,$size,$file_path)
{ 
	$image_type=array('gif'=>1,'jpg'=>2,'png'=>3,'bmp'=>6);
	$uploadedfile = $file;
	
	list($width,$height,$type)=getimagesize($uploadedfile);

	if($width>$size)
	{  
	
		switch($type)
		{
			case $image_type['gif']: $src = imagecreatefromgif($uploadedfile); break;
			case $image_type['jpg']: $src = imagecreatefromjpeg($uploadedfile); break;
			case $image_type['png']: $src = imagecreatefrompng($uploadedfile); break;
			//case $image_type['bmp']: $src = imagecreatefromwbmp($uploadedfile); break;
		}
	
		// For our purposes, I have resized the image to be  600 pixels wide, and maintain the original aspect 
		// ratio. This prevents the image from being "stretched"  or "squashed". If you prefer some max width other than
		// 600, simply change the $newwidth variable
		
		$newwidth=$size;	
		
		$newheight=($height/$width)*$size; 
		$tmp=imagecreatetruecolor($newwidth,$newheight);
		
		// this line actually does the image resizing, copying from the original image into the $tmp image
		
		imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height); 

		
		// now write the resized image to disk. I have assumed that you want the
		// resized, uploaded image file to reside in the ./images subdirectory.
		//$file_path = "uploadimages/".date('Y-d-s').$_FILES[$file]['name'];		
		switch($type)
		{
			case $image_type['gif']: $ret=imagegif($tmp,$file_path,100); break;
			case $image_type['jpg']: $ret=imagejpeg($tmp,$file_path,100); break;
			case $image_type['png']: $ret=imagepng($tmp,$file_path); break;
			//case $image_type['bmp']: imagewbmp($tmp,$file_path); break;
		}
		
		$_SESSION['succ']=1;
		imagedestroy($src);
		imagedestroy($tmp);
	}
	else {
//		$ret=move_uploaded_file($uploadedfile,$file_path);
		$_SESSION['succ']=0;
		}
	return $ret; 
}
	header("Location: image_resize.php");
?>
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