coverting a string to image(gif,...)

jonsof

I am trying to convert a text into a pic, like counters

IS this practicable?

thanks in advane

daphreeek

yep - its quite easy.

first check ur server has GD 🙂 coz u'll need it.

then search some PHP sites for tutorials on it - it took me a while to get it at first - but then its quite easy

Matt

jonsof

in that case, where the exported images should be saved?

daphreeek

you don't actually have to save the images - they are created when the page is called then they are destroyed and a new one created next time 🙂

have a look at some tutorials - its much to long winded to explain here when its already explained elsewhere.

Matt

jonsof

i put he following code

Header("Content-type: image/gif");
  if(!isset($s)) $s=11;
  $size = imagettfbbox($s,0,"/fonts/TIMES.TTF",$text);
  $dx = abs($size[2]-$size[0]);
  $dy = abs($size[5]-$size[3]);
  $xpad=9;
  $ypad=9;
  $im = imagecreate($dx+$xpad,$dy+$ypad);
  $blue = ImageColorAllocate($im, 0x2c,0x6D,0xAF);
  $black = ImageColorAllocate($im, 0,0,0);
  $white = ImageColorAllocate($im, 255,255,255);
  ImageRectangle($im,0,0,$dx+$xpad-1,$dy+$ypad-1,$black);
  ImageRectangle($im,0,0,$dx+$xpad,$dy+$ypad,$white);
  ImageTTFText($im, $s, 0, (int)($xpad/2)+1, $dy+(int)($ypad/2), $black, "/fonts/TIMES.TTF", $text);
  ImageTTFText($im, $s, 0, (int)($xpad/2), $dy+(int)($ypad/2)-1, $white, "/fonts/TIMES.TTF", $text);
  ImageGif($im);
  ImageDestroy($im);

and i recieved the following errors

Warning: Could not find/open font in c:\phpdev\www\tests\image-generation.php on line 4 
 
Warning: Could not find/open font in c:\phpdev\www\tests\image-generation.php on line 15 
 
Warning: Could not find/open font in c:\phpdev\www\tests\image-generation.php on line 16 
 
Fatal error: Call to undefined function: imagegif() in c:\phpdev\www\tests\image-generation.php on line 17

I am slightly confused. The GD library is pre -installed as far as i have installed an istallation kit phpdev.

Thus, where the problem is located?

If you have a specific tutorial in your mind then i will appreciate if you share it with me.

Thanks in advance

daphreeek

first - the imagegif() function isn't in the new versions of the gd library due to copyrite issues or sumthin. anyways - use jpeg or png equivilants.

the font error means that the font you are trying to use is not installed/in the correct directory on the server - change font or install the font.

i haven't checked your code as i am still not the best with gd.

Matt

jonsof

Mine is GD Version 2.0 or higher.

daphreeek

make sure you give the correct location of the fonts. on my computer I do it like this:

imagettftext($image, 15, 15, 10, 30, $black, "c:/windows/fonts/times.ttf", "blah");

Also use imagejpeg($im); instead of ImageGif($im);

keep trying 🙂

Matt

jonsof

🙁🙁🙁🙁
imagettftext(): supplied argument is not a valid Image resource in c:\phpdev\www\tests\image-generation.php on line 4 
 
Warning: Could not find/open font in c:\phpdev\www\tests\image-generation.php

I am wondering if the code above is too old for my library. I took the code from a tutorial 2-3 years ago

jonsof

i put the following code


mysql_connect("localhost");
mysql_select_db("announcements_system");
header("Content-type: image/jpeg");

$result_type=mysql_query("SELECT * FROM announcement ORDER BY postid DESC");

while($row_type=mysql_fetch_assoc($result_type)) {

$number = $row_type[postid];

$img_number = imagecreate(100,50);

$white = imagecolorallocate($img_number,255,255,255);

$black = imagecolorallocate($img_number,0,0,0);

$grey_shade = imagecolorallocate($img_number,204,204,204);

imagefill($img_number,0,0,$grey_shade);


ImageRectangle($img_number,0,0,99,49,$black);

Imagestring($img_number,9,30,15,$number,$black);

imagejpeg($img_number);

echo "<br>";

}

But only one image is being created everytime. I want several images including the titles from the announcement table.