PHP 繪圖 以下範例是用來產生出一張A4紙 畫出 3mm x 3mm格子 <?php // example2.php // set the HTTP header type to PNG header("Content-type: image/png"); // set the width and height of the new image in pixels $mm = 35; $width = 2480; $height = 3508; // create a pointer to a new true colour image $im = ImageCreateTrueColor($width, $height); // switch on image antialising if it is available ImageAntiAlias($im, true); // sets background to white $white = ImageColorAllocate($im, 255, 255, 255); ImageFillToBorder($im, 0, 0, $white, $white); // define a black colour $red = ImageColorAllocate($im, 255, 0, 0); $black = ImageColorAllocate($im, 0, 0, 0); // make a new line and add it to the image while(true){ if($i * $mm > $height) { break;} ImageLine($im, 0, $i * $mm, $width, $i*$mm, $black); $i++; } $i = 0; while(true){ ...