The examples in function imagettfbbox() gave me many problems because of misunderstand of how the text is positionned in the box.
So I did a new example:
- writing a text
- in the correct position in its box
- with a padding around
Enjoy !
Mike
<?
// some settings
$angle = 0;
$text = 'Ühg 0123456789';
$font_face = dirname(__FILE__).'/verdana.ttf'; // put the file in the same directory
$font_size = 9; //(int) pixels in GD 1, or points in GD 2
// retrieves box frame
$box = imagettfbbox($font_size, 0, $font_face, $text);
$bottom_left_x = $box[0]; // used below
$bottom_left_y = $box[1]; // used below
$bottom_right_x = $box[2]; // used below
$bottom_right_y = $box[3];
$top_right_x = $box[4];
$top_right_y = $box[5];
$top_left_x = $box[6];
$top_left_y = $box[7]; // used below
// define width and height of the text box
$box_w = abs($bottom_left_x) + abs($bottom_right_x);
$box_h = abs($bottom_left_y) + abs($top_left_y);
// add padding
$padding_x = 5;
$padding_y = 5;
$box_w = $box_w + 2 * $padding_x;
$box_h = $box_h + 2 * $padding_y;
// origin of the text = baseline of the first char
$text_x = abs($bottom_left_x) -1 + $padding_x;
$text_y = $box_h -1 - abs($bottom_left_y) - $padding_y;
// mysterious correction for the characters going low like pgjq
if(abs($bottom_left_y) <= 1) $box_h--;
// create the image
$img = imagecreatetruecolor($box_w, $box_h);
// define some colors
$white = imagecolorallocate($img,255,255,255);
$black = imagecolorallocate($img,0,0,0);
$lightgrey = imagecolorallocate($img, 200, 200, 200);
$grey = imagecolorallocate($img,100,100,100);
$yellow = imagecolorallocate($img, 0xFF, 0xFF, 0x00);
// attribute colors
$font_color = $black;
$padding_color = $lightgrey;
$background_color = $yellow;
// fill image with background color
imagefill($img, 0, 0, $background_color);
// fill image with padding color
imagefilledrectangle($img, 0, 0, $box_w, $padding_y - 1, $padding_color); // top
imagefilledrectangle($img, 0, 0, $padding_x - 1, $box_h - 1, $padding_color); // left
imagefilledrectangle($img, 0, $box_h - $padding_y -1, $box_w, $box_h - 1, $padding_color); // bottom
imagefilledrectangle($img, $box_w - $padding_x, 0, $box_w - 1, $box_h - 1, $padding_color); // right
//write text
imagettftext($img, $font_size, 0, $text_x, $text_y, $font_color, $font_face, $text);
//rotate image
if ($angle > 0) $img = imagerotate($img, $angle, $white);
// send header
header("Content-type: image/gif");
//sends image
imagegif($img);
imagedestroy($img);
?>
