note 76037 added to function.imagerectangle

In addition to Corey's note, this is the kind of code he means. Note that I always draw an outer grid border, so drawing lines will always take 1 + ceil((rows+cols)/2) actions. For a 20X20 grid, this means 21 actions, a 10X25 grid takes 19 Actions <?php function draw_grid(&$img, $x0, $y0, $width, $height, $cols, $rows, $color) { //draw outer border imagerectangle($img, $x0, $y0, $x0+$width*$cols, $y0+$height*$rows, $color); //first draw horizontal $x1 = $x0; $x2 = $x0 + $cols*$width; for ($n=0; $n<ceil($rows/2); $n++) { $y1 = $y0 + 2*$n*$height; $y2 = $y0 + (2*$n+1)*$height; imagerectangle($img, $x1,$y1,$x2,$y2, $color); } //then draw vertical $y1 = $y0; $y2 = $y0 + $rows*$height; for ($n=0; $n<ceil($cols/2); $n++) { $x1 = $x0 + 2*$n*$width; $x2 = $x0 + (2*$n+1)*$width; imagerectangle($img, $x1,$y1,$x2,$y2, $color); } } //example $img = imagecreatetruecolor(300, 200); $red = imagecolorallocate($img, 255, 0, 0); draw_grid($img, 0,0,15,20,20,10,$red); header("Content-type: image/png"); imagepng($img); imagedestroy($img); ?> have fun ;) ---- Server IP: 194.109.193.76 Probable Submitter: 62.45.207.84 ---- Manual Page -- http://www.php.net/manual/en/function.imagerectangle.php Edit -- https://master.php.net/note/edit/76037 Del: integrated -- https://master.php.net/note/delete/76037/integrated Del: useless -- https://master.php.net/note/delete/76037/useless Del: bad code -- https://master.php.net/note/delete/76037/bad+code Del: spam -- https://master.php.net/note/delete/76037/spam Del: non-english -- https://master.php.net/note/delete/76037/non-english Del: in docs -- https://master.php.net/note/delete/76037/in+docs Del: other reasons-- https://master.php.net/note/delete/76037 Reject -- https://master.php.net/note/reject/76037 Search -- https://master.php.net/manage/user-notes.php