Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Sometimes imagecolorat() returns 0 with some pixels in a PNG I’m analyzing. Why is that?
I looked the pixel and the color really is #111111. So it should return 1118481. Right?
I tried using imagealphablending($img,true) but I still get 0.
Thanks!
$img = @imagecreatefrompng($png);
if(!$img){
throw new Exception("Error loading PNG.");
}
var_dump(imagecolorat($img, 37, 625));
Result:
int 0
If image is loaded correctly and you get 0, then it means color is pure black (RGB => 0x000000 => 0)