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Showing results for tags 'for loop png'.
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Hi friends basic question for the community I want to generate a checkered flag but im unsure how to achieve this with for loops ? each box is of side 40 and width over all = $n any help would be great thanks $height = $n * 40; $width = $height; $im = imagecreatetruecolor($width, $height); $white = imagecolorallocate($im, 255, 255, 255); $red = imagecolorallocate($im, 255, 0, 0); for($i = 0; $i <= $width; $i += 40) { for($j = 0; $j <= $n; $j += $n) { if(( $i + $j ) % 2 == 0) { imagefilledrectangle ( $im , 0, $j, 0 , $width , $red ); } else { imagefilledrectangle ( $im , $j, $j , 0 , $width , $white ); } } } header('Content-type: image/png'); imagepng($im); imagedestroy($im);
