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PHP – Unzip and convert images from .jpg to .bmp

I’ve a code that unzip files that I upload to my server, it works without any problem.

But now I want to add another function. I want to convert all images that are in .zip file (.zip file only contains images) from .jpg format to .bmp.

<?php
$file = $target_path1;

$path = $target_path2;

$zip = new ZipArchive;
$res = $zip->open($file);
if ($res === TRUE) {

  $zip->extractTo($path);
  $zip->close();
  unlink($target_path1);    
} 

?>

There is some easy way to do it? If there is not, at least could I get name of extracted images?

Thanks.

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Answer

You first create an image object out of your file with imagecreatefromjpeg(). You then dump that object into different formats (using imagegif() for example):

$imageObject = imagecreatefromjpeg($imageFile);
imagegif($imageObject, $imageFile . '.gif');
imagepng($imageObject, $imageFile . '.png');
imagewbmp($imageObject, $imageFile . '.bmp');
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