Ohm

[Anon]

Hello Guys

Is it possible to get the sign for Resistors which is called Ohms. The sign is a roman Capital Omega. It looks like the thing below. I know HTML does it have it but I was hopping if I can have PHP draw it using:

imagechar() or
imagestring()

---

/ \
| |
\ /

---

OOzy

[Anon]

The image I drew did look good above. I will try again.

---

/ \
| |
\ /

---

[Anon]

I looked at the ImageTTFText() function help, and it precisely explains how to print an omega ! It says :

ImageTTFText($im, 20, 0, 10, 20, $white, "/path/arial.ttf", "Testing... Omega: Ω");

Ω is the UTF-8 code for omega.
As I'm under Win98, I had to adapt and experiment a bit. I found that this works :

ImageTTFText($im, 20, 0, 10, 20, $white, "c:/windows/fonts/cour.ttf", "Testing... Omega: Ω");

which prints in Courier New. It doesn't work with Arial on my system. With Symbol font, simply print a W:

ImageTTFText($im, 20, 0, 10, 20, $white, "c:/windows/fonts/symbol.ttf", "Testing... Omega: W");

of course, the whole string is now printed in greek (BTW, omega is greek, not roman).

If you're under Linux, I don't know if you'll have access to TTF fonts. Maybe you could simply get ttf files from a Windows system to make it work; I don't know if a specific library is needed to handle them.

[Anon]

Oops, the HTML renders a real omega where I didn't want to ! Read Ω instead (I hope this one looks good).

And a remark : I suppose it's not legal to "borrow" a ttf file from Windows... It's only for testing purposes, of course ;-)

[Anon]

Thank You Oliver

OOzy

[Anon]

Hi

How about if I find a free font on the web. Do you think this might be legal?

Also If I copy thsi windows file to Linux server, would PHP be able to read the file and use it?

OOzy

[Anon]

According to the manual, you need to install FreeType library (www.freetype.org) in order to PHP to handle TTF fonts on Linux.