How to Compress Image Size on Upload in Php -


i beginner , have been trying reduce image size on upload failing results. please me. here php code 

<?php if (isset($_post['update'])){ header('location:index2.php');   $upload_image = $_files["image"][ "name" ]; $folder = "images/"; move_uploaded_file($_files["image"]["tmp_name"], "$folder".$_files["image"]["name"]); $file = 'images/'.$_files["image"]["name"]; $uploadimage = $folder.$_files["image"]["name"]; $newname = $_files["image"]["name"]; $random = substr(number_format(time() * rand(),0,'',''),0,10); $resize_image = $folder.$newname.$random;  $actual_image = $folder.$newname;  list( $width,$height ) = getimagesize( $uploadimage );  $newwidth = 600;  $newheight = 600;  $thumb = imagecreatetruecolor( $newwidth, $newheight ); $source = imagecreatefromjpeg($actual_image);  imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);  imagejpeg( $thumb, $resize_image, 60 );   $out_image=addslashes(file_get_contents($resize_image));   $userid = $_session['id']; $date = $_post['date']; $data = mysqli_query($db, "select `image` `posts` id = '$userid' "); $sql = "insert posts (userid, image, date) values ('$userid', '$image', '$date')"; mysqli_query($db, $sql);    }  ?>

if use code getting image rotated , image not decreasing.


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