Sometimes could be useful to write a text into image, I'm thinking to those images usally published on facebook.

Generating such images using php is very simple, only five calls have to be used:

imagecreatetruecolor to create the image
imagefilledrectangle to create the background
imagettftext to draw the string
imagepng to save the file
imagedestroy to release memory

Note: I'm using Mac OS X so I have to load fonts from the /Library/Fonts/ directory

Save as drawstring.php the following script:

#!/usr/bin/php

<?php

    // Create the image

    $im = imagecreatetruecolor(400, 60);

    

    // Create some colors

    $red     = imagecolorallocate($im, 255, 0, 0);

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

    imagefilledrectangle($im, 0, 0, 400, 60, $red);

    

    // The text to draw

    $text = $argv[1];

    

    // Replace path by your own font path

    $font = '/Library/Fonts/Arial Black.ttf';

    

    // Add the text

    imagettftext($im, 20, 0, 10, 20, $white, $font, $text);

    

    imagepng($im, 'simpleimage.png');

    imagedestroy($im);

    ?>

 
issue the following command to make the script runnable:

 
run the script issueing the following command:

and here you are the result:

simpleimage

Maybe you want to draw your text in two different lines, you have to change the script in such a way:

 

#!/usr/bin/php

<?php

    // Create the image

    $im = imagecreatetruecolor(400, 60);

    

    // Create some colors

    $red     = imagecolorallocate($im, 255, 0, 0);

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

    imagefilledrectangle($im, 0, 0, 400, 60, $red);

    

    // The text to draw

    $text1 = $argv[1];

    $text2 = $argv[2];

    $text  = $argv[1]."\n".$argv[2];

 

    // Replace path by your own font path

    $font = '/Library/Fonts/Arial Black.ttf';

 

    // Add the text

    imagettftext($im, 20, 0, 10, 20, $white, $font, $text);

    

    imagepng($im, 'simpleimage.png');

    imagedestroy($im);

?>

 
try it with the following command: the script issueing the following command:

 
simpleimage

Gg1