Online PHP editor | refs for vdasr

<?php function make_seed() { list($usec, $sec) = explode(' ', microtime()); return (float) $sec + ((float) $usec * 100000); } mt_srand(make_seed()); $size=512; $image = imagecreatetruecolor($size,$size); $black = imagecolorallocate ($image, 0,0,0 ); $white = imagecolorallocate ($image, 255,255,255 ); for ($x = 0; $x<$size; $x++) { for ($y = 0; $y<$size; $y++) { imagesetpixel($image,$x,$y,mt_rand(0,1)?$black:$white); } } header ('Content-Type: image/png'); imagepng($image); ?>