note 86091 modified in function.copy by danbrown

<?php
// here is my own version of UploadFile and renameIfExists
// sample: UploadPicture($_FILES['picture'],"images/",true);
// if the third parameter it is true, UploadPicture overwrites the picture
// if it is false, returns the new name and dont overwrites. regards
/////////////////////////

function IfExistsRename($file_name, $new_location){
	if(substr($new_location,-1,1) != "/"){
		$new_location += $new_location . "/";
	}

	if(file_exists($new_location . $file_name)){
		$cont = 0;
		$original_fila_name = $file_name;
		do{
			$file_parts = explode(".",$original_fila_name,2);	
			$file_name = $file_parts[0] . $cont . "." . $file_parts[1];
			$cont++;
		}while(file_exists($new_location . $file_name));
	}
	
	return $file_name;
}

 function UploadPicture($posted_picture, $new_location, $overwrite){
	$file_name ="";

	if(substr($new_location,-1,1) != "/"){
		$new_location += $new_location . "/";
	}

	if(!$overwrite){
		$file_name = IfExistsRename($posted_picture['name'], $new_location);
	}else{
		$file_name = $posted_picture['name'];
	}
	
	// checking if it was send it by post
	
	if(is_uploaded_file($posted_picture['tmp_name'])){
		// Uploading the file with the new name
		if(!copy($posted_picture['tmp_name'], $new_location . $file_name)){
		 	echo "Unable to copy the file " . $posted_picture['tmp_name'] . " to the server";
		}else{
			echo "<!-- Field Copied-->";
		}
	}else{
		echo "Unable to detect the file source";
	}
	
	return $file_name;

}
?>

--was--
// here is my own version of UploadFile and renameIfExists
// sample: UploadPicture($_FILES['picture'],"images/",true);
// if the third parameter it is true, UploadPicture overwrites the picture
// if it is false, returns the new name and dont overwrites. regards
/////////////////////////

function IfExistsRename($file_name, $new_location){
	if(substr($new_location,-1,1) != "/"){
		$new_location += $new_location . "/";
	}

	if(file_exists($new_location . $file_name)){
		$cont = 0;
		$original_fila_name = $file_name;
		do{
			$file_parts = explode(".",$original_fila_name,2);	
			$file_name = $file_parts[0] . $cont . "." . $file_parts[1];
			$cont++;
		}while(file_exists($new_location . $file_name));
	}
	
	return $file_name;
}

 function UploadPicture($posted_picture, $new_location, $overwrite){
	$file_name ="";

	if(substr($new_location,-1,1) != "/"){
		$new_location += $new_location . "/";
	}

	if(!$overwrite){
		$file_name = IfExistsRename($posted_picture['name'], $new_location);
	}else{
		$file_name = $posted_picture['name'];
	}
	
	// checking if it was send it by post
	
	if(is_uploaded_file($posted_picture['tmp_name'])){
		// Uploading the file with the new name
		if(!copy($posted_picture['tmp_name'], $new_location . $file_name)){
		 	echo "Unable to copy the file " . $posted_picture['tmp_name'] . " to the server";
		}else{
			echo "<!-- Field Copied-->";
		}
	}else{
		echo "Unable to detect the file source";
	}
	
	return $file_name;

}

http://php.net/manual/en/function.copy.php