PHP file upload

[Asprisa]

Hi guys,

I have managed to code a file that uploads a file, resizes it to 100 x 100 px, and then generates a random number and renames the image (so i do not get images over writing each other), what i am stuck on is trying to block uploads that are over 200kb, and if there is no file to upload (as there will be no need sometimes to upload a file) to skip the code all together in order to process some more code i got going on after this piece, can anyone help! i have looked around various websites and am just absoulty stuck on this!

Any help is much appriciated

The Code:

<?php
if(isset($_POST['submit'])){
if (isset ($_FILES['file'])){
imagename = $_FILES['file']['name'];
$random_digit=rand(0000,9999);
$new_file_name=$random_digit.$imagename;

$source = $_FILES['file']['tmp_name'];
$target = "Articleimages/".$new_file_name;
move_uploaded_file($source, $target);


$imagepath = $new_file_name;
$save = "Articleimages/" . $imagepath;
$file = "Articleimages/" . $imagepath;

list($width, $height) = getimagesize($file) ;

$modwidth = 100;

$diff = $width / $modwidth;

$modheight = 100;
$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($file) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;

imagejpeg($tn, $save, 100) ;

$save = "Articleimages/Thumbs/" . $imagepath;
$file = "Articleimages/" . $imagepath;

list($width, $height) = getimagesize($file) ;

$modwidth = 100;

$diff = $width / $modwidth;

$modheight = 100;
$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($file) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;

imagejpeg($tn, $save, 100) ;

}
}
}
?>



Cheers

Jay!

[Markus]

You can obtain the size of the file in the $_FILES array.

$_FILES['file']['size']

Then use an IF check to compare sizes.

[nashruddin]

move the code to resize and rename the image in a new function. something like this:

<?php
/* function to resize and rename the uploaded image */
function resize_and_rename($filename) {
  /* ...some code here...*/
}
 
/* process uploaded image */
if (is_uploaded_file($_FILES['file']['tmp_name'])) {
  /* check if uploaded image size < 200kb */
  if ($_FILES['file']['size'] >= 200000) {
    die("Image size should be < 200kb!");
  } else {
    /* resize and rename the uploaded image */
    resize_and_rename($_FILES['file']['tmp_name']);
  }
}
?>
 

[Asprisa]

Hi Guys,

Thank you very much for your replies, i managed to get the code working!

Jay!