PHP/Graphics Image/imagettfbbox

Applying TrueType Fonts to an Image

 
<?php
    $animage = imagecreatefromjpeg ("myImage.jpg")){
    $black = imagecolorallocate ($animage, 0, 0, 0);
    $topleftx = 10;
    $toplefty = 30;
    $bottomrightx = 70;
    $bottomrighty = 90;
      
    $verdana = "C:\WINDOWS\Fonts\verdana.ttf";
    $dimensions = imagettfbbox (14,0,$verdana, $_GET["whattosay"]);
    $strlen = 100;
    $xcoord = 200;
      
    imagettftext($animage, 14, 0, $xcoord, 60, $black, $verdana, $_GET["whattosay"]);
      
    imagejpeg ($animage);
    header ("Content-type: image/jpeg");
      
    imagedestroy ($animage);
?>

The eight elements in the array returned by imagettfbox( )

 
0 Lower-left corner, X coordinate
 
1 Lower-left corner, Y coordinate
 
2 Lower-right corner, X coordinate
 
3 Lower-right corner, Y coordinate
 
4 Upper-right corner, X coordinate
 
5 Upper-right corner, Y coordinate
 
6 Upper-left corner, X coordinate
 
7 Upper-left corner, Y coordinate

Using the imagettfbbox() Function

 
<?php
    define("WIDTH", 300);
    define("HEIGHT", 100);
    define("F_SIZE", 40);
    define("F_ANGLE", 20);
    define("F_FONT", "myfont.ttf");
    define("F_TEXT", "PHP Unleashed");
    $img = imagecreate(WIDTH, HEIGHT);
    $white = imagecolorallocate($img, 255,255,255);
    $black = imagecolorallocate($img, 0,0,0);
    imagerectangle($img, 0,0,WIDTH-1,HEIGHT-1, $black);
    $box = imagettfbbox(F_SIZE, F_ANGLE, F_FONT, F_TEXT);
    $start_x = (WIDTH/2) - (int)(($box[0] + $box[2] + $box[4] + $box[6])/4);
    $start_y = (HEIGHT/2) - (int)(($box[1] + $box[3] + $box[5] + $box[7])/4);
    $polygon = array($box[0]+$start_x,
                     $box[1]+$start_y,
                     $box[2]+$start_x,
                     $box[3]+$start_y,
                     $box[4]+$start_x,
                     $box[5]+$start_y,
                     $box[6]+$start_x,
                     $box[7]+$start_y);
    imagepolygon($img, $polygon, 4, $black);
    imageTTFtext($img, F_SIZE, F_ANGLE, $start_x,
                 $start_y, $black, F_FONT, F_TEXT);
    header("Content-Type: image/png");
    imagepng($img);
?>