How to Create image in PHP ?

I try to create an image in PHP with imagecreate () function. I wonder if it is possible for a user to download an image as their logo and use that in the image that I create? I know that you can use an existing image to imagecreatefrompng () function, but I also want to add an image to the imagecreate (). but didn't work can anyone help me ?

Thanks

If you are sure that the downloaded file is safe to work with you to determine what type of image it is, then use the "* imagecreatefrom" function for this type of pointing the way to the uploaded file.

Don't use gif unless you have an old version of GD (I doubt it) use png instead. heres a simple example:
<?php
header("Content-type: image/png");
$image = imagecreate( 200, 200 );
imagecolorallocate($image,200,100,100);
imagepng($image);
imagedestroy($image);
?>

Create a 200x200 square (and a bit more)

PHP Code:

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<?php
create_image();
print "<img src=image.png?".date("U").">";

function  create_image(){
        $im = @imagecreate(200, 200) or die("Cannot Initialize new GD image stream");
        $background_color = imagecolorallocate($im, 255, 255, 0);  // yellow
        imagepng($im,"image.png");
        imagedestroy($im);
}
?>

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