Hello group,

I'm uploading some image files such as jpeg, png and gif. However, I
must convert time to jpeg type. I have few questions:

1) Can I convert time in using gd library?

2) Currently, I check the MIME file to see what is holding (thanks to
Michael ) like image/jpg or image/gif or image/png. But what should be
the criteria? I'm checking:

if ($img_array_info[mime] == "image/jpg" {
...
}

However, there are some files that rather image/jpg they have image/
jpeg as mime in their headers. Should I compare it agaisnt these two
criteria or there are other things I have to consider too?

Thanks,
Amit

On Mar 28, 5:58pm, amit <amit.ko...@gmail.com> wrote:
> Hello group,
>
> I'm uploading some image files such as jpeg, png and gif. However, I
> must convert time to jpeg type. I have few questions:
>
> 1) Can I convert time in using gd library?
>
> 2) Currently, I check the MIME file to see what is holding (thanks to
> Michael ) like image/jpg or image/gif or image/png. But what should be
> the criteria? I'm checking:
>
> if ($img_array_info[mime] == "image/jpg" {
> ...
> }
>
> However, there are some files that rather image/jpg they have image/
> jpeg as mime in their headers. Should I compare it agaisnt these two
> criteria or there are other things I have to consider too?
>
> Thanks,
> Amit



Currently I'm doing this:

if ( (strcasecmp($array_img_information[mime], "image/jpg") == 0 ) ||
(strcasecmp($array_img_information[mime], "image/jpeg") == 0 ) )
{
echo "<br>OK, jpeg file<br>";
}
else
{
echo "<br>$array_img_information[mime]<br>";
echo "<br>Not a jpeg file must conver it!<br>";

}

Is this a proper way or ....?

Thanks again.

Hi,

The best way to get the image type is exif_imagetype. If you don't
have that you can also use getimagesize.

Now, if you want a general way to convert between image types, the
easiest is to use the convert command that comes with ImageMagick.
Here's a function to convert many image types:

<?

function imConvert($path, $newPath)
{
$cmd = 'convert ' . escapeshellarg($path) . ' ' .
escapeshellarg($newPath) . ' 2>&1';
exec($cmd, $output, $exitCode);
if ($exitCode != 0) {
throw new Exception("Command \"$cmd\" failed with " .
"exit code $exitCode: " . join("\n", $output));
}
}

$path = dirname(__FILE__) . '/img.gif';
$newPath = dirname(__FILE__) . '/im.jpg';
imConvert($path, $newPath);

?>

You can also use GD to do this. To convert from GIF to JPEG, you would
call imagecreatefromgif then imagejpeg.

Regards,

John Peters

On Mar 28, 9:08 pm, amit <amit.ko...@gmail.com> wrote:
> On Mar 28, 5:58 pm, amit <amit.ko...@gmail.com> wrote:
>
>
>
> > Hello group,
>
> > I'm uploading some image files such as jpeg, png and gif. However, I
> > must convert time to jpeg type. I have few questions:
>
> > 1) Can I convert time in using gd library?
>
> > 2) Currently, I check the MIME file to see what is holding (thanks to
> > Michael ) like image/jpg or image/gif or image/png. But what should be
> > the criteria? I'm checking:
>
> > if ($img_array_info[mime] == "image/jpg" {
> > ...
> > }
>
> > However, there are some files that rather image/jpg they have image/
> > jpeg as mime in their headers. Should I compare it agaisnt these two
> > criteria or there are other things I have to consider too?
>
> > Thanks,
> > Amit
>
> Currently I'm doing this:
>
> if ( (strcasecmp($array_img_information[mime], "image/jpg") == 0 ) ||
> (strcasecmp($array_img_information[mime], "image/jpeg") == 0 ) )
> {
> echo "<br>OK, jpeg file<br>";}
>
> else
> {
> echo "<br>$array_img_information[mime]<br>";
> echo "<br>Not a jpeg file must conver it!<br>";
>
> }
>
> Is this a proper way or ....?
>
> Thanks again.

Hi Amit,

For work with images, try this class, has very features.

http://www.verot.net/res/sources/class.upload.html

On Mar 28, 7:10pm, petersprc <peters...@gmail.com> wrote:
> Hi,
>
> The best way to get the image type is exif_imagetype. If you don't
> have that you can also use getimagesize.
>
> Now, if you want a general way to convert between image types, the
> easiest is to use the convert command that comes with ImageMagick.
> Here's a function to convert many image types:
>
> <?
>
> function imConvert($path, $newPath)
> {
> $cmd = 'convert ' . escapeshellarg($path) . ' ' .
> escapeshellarg($newPath) . ' 2>&1';
> exec($cmd, $output, $exitCode);
> if ($exitCode != 0) {
> throw new Exception("Command \"$cmd\" failed with " .
> "exit code $exitCode: " . join("\n", $output));
> }
>
> }
>
> $path = dirname(__FILE__) . '/img.gif';
> $newPath = dirname(__FILE__) . '/im.jpg';
> imConvert($path, $newPath);
>
> ?>
>
> You can also use GD to do this. To convert from GIF to JPEG, you would
> call imagecreatefromgif then imagejpeg.
>
> Regards,
>
> John Peters
>
> On Mar 28, 9:08 pm,amit<amit.ko...@gmail.com> wrote:
>
>
>
> > On Mar 28, 5:58 pm,amit<amit.ko...@gmail.com> wrote:
>
> > > Hello group,
>
> > > I'm uploading some image files such as jpeg, png and gif. However, I
> > > must convert time to jpeg type. I have few questions:
>
> > > 1) Can I convert time in using gd library?
>
> > > 2) Currently, I check the MIME file to see what is holding (thanks to
> > > Michael ) like image/jpg or image/gif or image/png. But what should be
> > > the criteria? I'm checking:
>
> > > if ($img_array_info[mime] == "image/jpg" {
> > > ...
> > > }
>
> > > However, there are some files that rather image/jpg they have image/
> > > jpeg as mime in their headers. Should I compare it agaisnt these two
> > > criteria or there are other things I have to consider too?
>
> > > Thanks,
> > >Amit
>
> > Currently I'm doing this:
>
> > if ( (strcasecmp($array_img_information[mime], "image/jpg") == 0 ) ||
> > (strcasecmp($array_img_information[mime], "image/jpeg") == 0 ) )
> > {
> > echo "<br>OK, jpeg file<br>";}
>
> > else
> > {
> > echo "<br>$array_img_information[mime]<br>";
> > echo "<br>Not a jpeg file must conver it!<br>";
>
> > }
>
> > Is this a proper way or ....?
>
> > Thanks again.- Hide quoted text -
>
> - Show quoted text -


Thanks indeed for your . Very nice function!

Regards,
Amit

On Mar 28, 7:51pm, "Leandro 'xl3'" <leandro...@gmail.com> wrote:
> HiAmit,
>
> For work with images, try this class, has very features.
>
> http://www.verot.net/res/sources/class.upload.html


Thanks Leandro,

I had no idea there is a class. You both gave very ful
information.

Thanks
Amit