PHP:Tutorial - Getting to know GD

[John]

you can change the file the php script looks for by editing this line

$font = 'font.ttf'; //font file 

change it to

$font = 'font.TTF'; //font file 

[TcM]

Yeah I did that too before but.. still Broken image link :S

[codyg]

Thanks for this, exactly want i needed and VERY helpful

[major]

thanks!!!
just the thing i was looking for
prozit.net/ilu/index.php?form=sidewinder
prozit.net/merry/index.php?form=Dan

but i have one little problem
how can i place the text in the midlle
or by pixels

and how can i pu the text in an angle

[John]

but i have one little problem
how can i place the text in the midlle
or by pixels

Well by following the tutorial you know that these lines account for the location of the text:

$size = imagettfbbox($fontsize, 0, $font, $text);
$dx = (imagesx($im)) - (abs($size[2]-$size[0])) - 20; 

imagesx($im) 

is the width of the image and

abs($size[2]-$size[0]) 

is the width of the font

In theory taking half the width of the image, and then subtracting half the width of the string should give you centered text so try this

$dx = (imagesx($im)/2) - (abs($size[2]-$size[0])/2); 

and how can i put the text in an angle

The imagettftext requires 8 arguments which are the resource image, font size, the angle, x location, y location, font color, the actual font, and the string to be printed.

By taking a look at the php manuals reference to the imagettftext [ PHP: imagettftext - Manual ]

angle:

The angle in degrees, with 0 degrees being left-to-right reading text. Higher values represent a counter-clockwise rotation. For example, a value of 90 would result in bottom-to-top reading text.

There for to make the text on an angle
You would do

imagettftext($im, $size, 45, 15, 12, $color, $font, $text); 

Where 45 is the angel degree.

This code has not been tested

hth

[major]

it is writing
<br />
<b>Fatal error</b>: Call to undefined function: imagettfbbox() in <b>/home/labdan/domains/prozit.net/public_html/gd/in.php</b> on line <b>22</b><br />


http://prozit.net/gd/in.php?text=sadsa
...
how can i solve it
and onther thing
it is the same code for gif and jpg expet from changing image/gif
and
image.gif
?

[ConnorWilson]

I never really understood GD, even though I'm pretty advanced at PHP. This cleared a lot of things up, thanks.

[John]

it is writing
<br />
<b>Fatal error</b>: Call to undefined function: imagettfbbox() in <b>/home/labdan/domains/prozit.net/public_html/gd/in.php</b> on line <b>22</b><br />


http://prozit.net/gd/in.php?text=sadsa
...
how can i solve it
and onther thing
it is the same code for gif and jpg expet from changing image/gif
and
image.gif
?

Which part of the changed code is causing the error? And no, this code is only meant for png images, there are other functions you can use for gif's and jpg's such as imagecreatefromgif() or imagecreatefromjpeg() rather than imagecreatefromgif(). Although you have to change the functions the general code should remain the same.

For more information on the GD functions take a look here PHP: gd_info - Manual

[kraam]

cool thanks

[snailofsatan]

hello! nice tutorial!! i was just wondering if you know how to wrap the text into a nice paragraph if the string is too long to fit onto the image?

thankyou
kev.