Splitting images from while loop and renaming in php - php

Question

I am trying to get images from while loop and split them up at the period (.).. and then change the name of the image to ImageName + -resized. But I can not seem to figure out how to do this. Any help would be greatly appreciated!
So in short I have this: image.jpg and I want to create this image-resized.jpg: Here is my code:
<?php
$f = $_GET['f'];
$h = $_GET['h'];
$gp = $_GET['gp'];
//Create folder path
$path = "Fotos/".$f."/".$h."/".$gp."/";
//Get pictures from database
$getfolders = mysql_query("SELECT FolderName, Files FROM Files WHERE FolderDate = '$f' AND FolderHour = '$h' AND FolderName = '$gp'") or die(mysql_error());
//List pictures from database
while($row = mysql_fetch_array($getfolders)){
$img = $row['Files'];
//Seperate image at period(.)
$image = explode('.', $img);
//Get image name ----------------Here is where I need help!!
for($i = 0; $i < sizeof($image); $i++)
{
$imag = $image[$i];
}
?>
<div class="picture" id="pic"><img src="<?php echo $path; echo $imag ?>" alt="picture" /><?php echo $img?></div>
<?php
}
?>

Answer 1

Well, the simplest solution would be:
$image = explode('.', $img);
$extension = array_pop($image);
$resizedFileName = implode('.', $image) . "-resized.{$extension}";
But this solution does assume, that there are only simple extensions:
image.jpg => image-resized.jpg // ok
image.tar.gz => image.tar-resized.gz // not so ok
But if there are only simple extensions, this solution might be sufficient.
A better solution would be using SplFileInfo:
$fi = new SplFileInfo($image);
$resizedFileName = $fi->getBasename("." . $fi->getExtension()) . "-resized." . $fi->getExtension();
SplFileInfo::getExtensions() is available since PHP 5.3.6