PHP Script Problem

[Colin-uk]

Hi all,

ive been trying to get a script working
one that writes text onto an image
but it doesnt, it just shows the image.

http://www.colin-uk.com/scripts/capt...php?text=hello

if you go to that url its ment to say "hello" on the sign

heres the code im using:

PHP Code:

header('Content-type: image/png');

$image = imagecreatefrompng("familyguy.png");

$white = imagecolorallocate($image, 255, 255, 255);
imagettftext($image, 7, 0, 270, 380, $white, "annifont.ttf", "TEXT HERE");                                 

imagepng($image);

?> 


any ideas whats wrong?

thanks
-c0lin

[greffov]

1. it can be that PHP can't find the font you list (use absolute location or copy the ttf into the location the script also is (ie find out relative path)

2. the given x and y coordinates can be out of the image scope (don't know that since I'm too lazy to look up the image size)

3. This function requires both the GD library and the FreeType library. Make sure you have them both

tip: destroy the image after sending it using imagedestroy($image);

[Colin-uk]

thanks for the reply greffov,

the font is in the same directory as the script so that shouldnt be a problem
the GD image library is installed as i asked my host about it a few days ago, not sure about the freetype library though. will have to ask
i,ll try changing the co-ordinates and see if that makes any diffrence.
and thanks for the tip

[greffov]

maybe better start using the PHP example, and/or with coordinates 0,0 (top left corner)

Let us know if you get it to work!

[Colin-uk]

Well i got it to work

See here

but i have another question/problem now

it works great for short words but, if i use long words then it goes off the edge of the image.
is there anyway i can wrap it onto a new line?

Click here for a long text example

and can i stop the slanting of the text? it makes it look unrealistic lol

thanks

[greffov]

all nice and well, but couldn't you think of anything else like this?


About long lines... I really think you are to be creative there yourself.
A possible approach would be defining the max characters that fit in the board, then split the text after each x characters, respecting word boundaries. That means if on char x is not a space you start looking backwards for the first space. If you can't find any, then just split on position x.

suppose your max is 6, and your sentence is hello my name is collin, then the split would be:
hello
my
name
is
collin
But suppose your sentence was, hello I am rediculous, then the split would be:
hello
I am
redicu
lous

The slanting is caused by the first argument (a 7), which defines the degrees of rotation. Do you ever RTFM? LOL

[Colin-uk]

lol yeah i do RTFM
(i didnt know if it was just the font style lol)

i found a function called wordwrap in the php manual
but i dunno if i could use that some how...

heres what i got so far

PHP Code:

<?php

header('Content-type: image/png');

$image = imagecreatefrompng("familyguy.png");

$black = imagecolorallocate($image, 0, 0, 0);
imagettftext($image, 0, 10, 40, 150, $black, "annifont.ttf", $text);                                 

$newtext = wordwrap($text, 16, "<br />");

imagepng($image);

?>

but it only shows the image with no text

[greffov]

hmmm, wait, I should rtfm too...
the first argument was the font size...

array imagettftext ( resource image, int size, int angle, int x, int y, int color, string fontfile, string text)

wordwrap sounds like a function that does what I described... cool, try and see what it does.

[Colin-uk]

it just shows the image with no text,
would the code above work?

[greffov]

fontsize = 0 means the text it unreadable

[Colin-uk]

oops...

well i tried it with this code:

PHP Code:

<?php

header('Content-type: image/png');

$image = imagecreatefrompng("familyguy.png");

$black = imagecolorallocate($image, 0, 0, 0);
imagettftext($image, 15, 0, 40, 150, $black, "annifont.ttf", $text);

$newtext = wordwrap($text, 16, "<br />");


imagepng($image);

?>

and this is what i got:

www.colin-uk.com/scripts/captions/familyguy.php?text=this is a very long sentence
(copy and paste url)

so word wrap doesnt seem to work then...

[greffov]

LOL, colin, forgive me lauging, but... you are wordwrapping AFTER you made the image!!!

FIRST do the wordwrap (and use "\n" instead of "<br />", for we're not in HTML now), THEN generate the image, like:

PHP Code:

$text = wordwrap($text, 16, "\n");
imagettftext($image, 15, 0, 40, 150, $black, "annifont.ttf", $text); 


[Colin-uk]

i thought it was the imagepng command that made the image?

the php manual says the "\n" and "<br />" are the same so i just used that one

i tried what u suggessted but now i just get a blank image with no text...

[greffov]

uhm, yes, you're right about the imagepng, but the imagettftext command draws the text in the image, which I referred to as 'make'.

I assume you only used my excerpt code. You needed all lines, but those two in that order. This is the complete code:

PHP Code:

<?php
header('Content-type: image/png');

$image = imagecreatefrompng("familyguy.png");

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

$text = wordwrap($text, 16, "\n");
imagettftext($image, 15, 0, 40, 150, $black, "annifont.ttf", $text);

imagepng($image);
?>

<br /> and \n might in some cases have the same impact, I didn't RTFM of wordwrap, but they sure AREN'T the same, lol.

[Colin-uk]

Woo hoo it works

See here

Thanks a lot for all the help lol


Now to go and find some more people holding signs lol....