- print_r: documentation ( source)
- array_values: documentation ( source)
- getimagesize: documentation ( source)
<?php
$url = "http://apicloud.me/assets/colortag/image4.jpg";
$im = imagecreatefromjpeg($url);
list($w,$h) = getimagesize($url);
$colors = [];
for($x=0;$x<$w;$x++) {
for($y=0;$y<$h;$y++) {
$i = imagecolorat($im, $x, $y);
$c = imagecolorsforindex($im, $i);
$colors[$x][$y] = array_values($c);
}
}
print_r($colors);