When using jpg picture when PHP says it is corrupt (when it is not) then Server crashes with function imagecreatefromjpeg.

See source below !

$srcImg = imagecreatefromjpeg($fileName);
$scale  = 4;

// create a (blank) smaller image object 
$srcSize = getimagesize($fileName);
$dstImg = imagecreate($srcSize[0]/$scale, $srcSize[1]/$scale);

// copy and resize from the source image object to the smaller blank one 
imagecopyresized($dstImg, $srcImg, 0, 0, 0, 0,
                  $srcSize[0]/$scale, $srcSize[1]/$scale,
                  $srcSize[0], $srcSize[1]);

// send the smaller image object to the browser 

$plaatje = imagejpeg($dstImg);

// clean up 
imagedestroy($scrImg);
imagedestroy($dstImg);