detect corrupt jpeg

[bumbar]

hi!

I have images gallery. First i load images on the fly with auto resizing. when I load some images crashed. How i detect this corrupt images and put error massage?

I see this from www.php.net :

<?php
function LoadJpeg($imgname)
{
$im = @imagecreatefromjpeg($imgname); / Attempt to open /
if (!$im) { / See if it failed /
$im = imagecreatetruecolor(150, 30); / Create a black image /
$bgc = imagecolorallocate($im, 255, 255, 255);
$tc = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
/ Output an errmsg /
imagestring($im, 1, 5, 5, "Error loading $imgname", $tc);
}
return $im;
}
?>

but i dont know how use this!
Thank you!

[bbaassiri]

you say load images. what you are you referring to? loading via browser or image program

perhaps you should verify the uploading of the images

[bumbar]

thank for replay

I solve the problem. Resize do via browser. When images crashed or missed i call office image! Here is my script:

<?
header("Content-type: image/jpeg");

function loadjpeg($path, $max_x, $max_y) {
$im = @imagecreatefromjpeg($path);
if (!$im) {
$office = 'no_pic.gif';

// Content type
header('Content-type: image/gif');

// Get new dimensions
list($width, $height) = getimagesize($office);
$new_width = 100;
$new_height= 75;

// Resample
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromgif($office);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

// Output
imagegif($image_p, null, 100);
}

if ($max_x != 0 && $max_y != 0) {
$x = 100;
$y= 75;

if (imagesx($im) != $x || imagesy($im) != $y) {
$tmp = imagecreatetruecolor($x, $y);
imagecopyresampled($tmp, $im, 0, 0, 0, 0, $x, $y, imagesx($im), imagesy($im));
imagedestroy($im);
$im = $tmp;
}
}

return $im;
}
$qwerty="my_image.jpg".$pic;
$jpg = loadjpeg("$qwerty",150,150);

//Display new image in browser, quality 50%
Header("Content-type: image/jpeg");
imagejpeg($jpg,'',50);

?>

CHEERS!