add text on top of PNG

[toffee]

Hi all,

not sure if this is possible in PHP - every couple of weeks; i get a few png
files; which i th open in an image editor; add a text box with comments in
the top right corner; save the pngs and save them for later use by a php
script.
My question is there an automatic way so that a php script can do all this
image editing for me ?

i appreciate all replies.

kind regards

T

[Gordon Burditt]

Re: add text on top of PNG

>not sure if this is possible in PHP - every couple of weeks; i get a few png

>files; which i th open in an image editor; add a text box with comments in
>the top right corner; save the pngs and save them for later use by a php
>script.
>My question is there an automatic way so that a php script can do all this
>image editing for me ?

I believe that the netpbm package can do the image editing you want,
given a PNG image of a certain size and text you want in the corner.
A shell script certainly could. If you invoke the shell script via
PHP exec(), you could do it. PHP can also handle things like
uploading the image files and the text.

[Anonymous]

Re: add text on top of PNG

toffee wrote:

>
Hi all,
>
not sure if this is possible in PHP - every couple of weeks; i get a few png
files; which i th open in an image editor; add a text box with comments in
the top right corner; save the pngs and save them for later use by a php
script.
My question is there an automatic way so that a php script can do all this
image editing for me ?
>
i appreciate all replies.

Sure.

Check the image functions in the PHP manual, especially the functions
imagecreatefrom png to load a png image, imagestring (or imagepstext or
imagettftext if you want Postscript Type 1 or Truetype fonts) to write
your text into it and imagepng to output it again in png format.

Bye!

[pangea33]

Re: add text on top of PNG

Anonymous wrote:

toffee wrote:

Hi all,

not sure if this is possible in PHP - every couple of weeks; i get a few png
files; which i th open in an image editor; add a text box with comments in
the top right corner; save the pngs and save them for later use by a php
script.
My question is there an automatic way so that a php script can do all this
image editing for me ?

i appreciate all replies.

>
Sure.
>
Check the image functions in the PHP manual, especially the functions
imagecreatefrom png to load a png image, imagestring (or imagepstext or
imagettftext if you want Postscript Type 1 or Truetype fonts) to write
your text into it and imagepng to output it again in png format.
>
Bye!

With a little practice it's not too tough to do this dynamically. Here
are the most useful php functions to get started with...

http://us2.php.net/imagecreatefrompng

http://us2.php.net/manual/en/function.imagefilledrectangle.php

http://us2.php.net/manual/en/function.imagefttext.php

Here's a simple example so you can get an idea of what is involved....

<?php
// Set the content-type
header("Content-type: image/png");

// Create the image
$im = ImageCreateFrom png("images/myImg.png");

// Create some colors
$white = imagecoloralloc ate($im, 255, 255, 255);
$grey = imagecoloralloc ate($im, 128, 128, 128);
$black = imagecoloralloc ate($im, 0, 0, 0);
imagefilledrect angle($im, 10, 5, 450, 80, $white);

// The text to draw
$text = 'Dynamic Text';
// Replace path by your own font path
$font = 'fonts/arial.ttf';

// Add some shadow to the text
//imagettftext($i m, 30, 45, 201, 301, $grey, $font, $text);

// Add the text
imagettftext($i m, 15, 10, 410, 70, $grey, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($i m);
?>