图像不是有效的JPEG

Question

I have this code:

$image = imagecreatefromjpeg($filename);
$size = getimagesize($filename, $info);

var_dump($image);
var_dump($size);

And I receive this output:

Warning: imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error
Warning: imagecreatefromjpeg(): 'my_image.jpg' is not a valid JPEG file

bool(false)

array(7) {
  [0]=>
  int(22)
  [1]=>
  int(30)
  [2]=>
  int(2)
  [3]=>
  string(22) "width="22" height="30""
  ["bits"]=>
  int(8)
  ["channels"]=>
  int(3)
  ["mime"]=>
  string(10) "image/jpeg"
}

I got warn, that image is not a valid JPEG file and don't load that file, but getimagesize says that is JPEG file (mime type). What is happening and how can I fix this?

I tried this, but it didn't help me:

1. check *memory_limit* in php.ini
2. check space in the disk
3. set *gd.jpeg_ignore_warning*

Interestingly, on the local server everything works good (with the same image of course).

Answer 1

Create Function isPNG

<?php

function isPNG($file){
    return preg_match('/'.quotemeta('PNG').'/i', file_get_contents($file));
}

?>

Edit your code

<?php

    if(preg_match('/\.(png)$/i', $filename) || isPNG($filename)){
        $image = imagecreatefrompng($filename);
    }else{
        $image = imagecreatefromjpeg($filename);
    }

    $size = getimagesize($filename, $info);

    var_dump($image);
    var_dump($size);
?>

Good luck!