php - Getting boxsize of text and create an image text -

i want create text image newsletter textearea. so, have more 1 line. thinking of using imagettfbbox calculate total width , height (of lines), , use imagettftext write in image. problem that, noticed more font-size is, more padding left adding "imagettftext" text. imagettfbbox telling me nothing padding. returing array values [0] , [1] both allways = -1.

thanks!

you gd or imagemagick, post basic example using gd.

<?php // set content-type header('content-type: image/png');  // create image $im = imagecreatetruecolor(400, 30);  // create colors $white = imagecolorallocate($im, 255, 255, 255); $grey = imagecolorallocate($im, 128, 128, 128); $black = imagecolorallocate($im, 0, 0, 0); imagefilledrectangle($im, 0, 0, 399, 29, $white);  // text draw $text = 'a simple text string'; // replace path own font path $font = 'tahoma.ttf';  // add shadow text imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);  // add text imagettftext($im, 20, 0, 10, 20, $black, $font, $text);  // using imagepng() results in clearer text compared imagejpeg() imagepng($im); imagedestroy($im); ?> 

now formatting string can use strlen() return lengths of individual strings , propagate function needed. more stream-lined approach consider using imagemagick because supports textalignment , more.

<?php  define("left", 1); define("center", 2); define("right", 3);  $w = 400; $h = 200; $gradient = new imagick(); $gradient->newpseudoimage($w, $h, "gradient:red-black");  $draw = new imagickdraw(); $draw->setfontsize(12); $draw->setfillcolor(new imagickpixel("#ffffff"));  $draw->settextalignment(left); $draw->annotation(150, 30, "hello world1!"); $draw->settextalignment(center); $draw->annotation(150, 50, "hello world2!"); $draw->settextalignment(right); $draw->annotation(150, 70, "hello world3!");  $draw->setfillcolor(new imagickpixel("#0000aa")); $x1 = 150; $x2 = 150; $y1 = 0; $y2 = 200; $draw->rectangle($x1, $y1, $x2, $y2);  $gradient->drawimage($draw);  $gradient->setimageformat("png"); header("content-type: image/png"); echo $gradient; ?> 

i hope you. can elaborate on questions might have.