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coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Thu Jul 12, 2007 2:39 pm
hey guys,
I'm having problem when I'm excuting this code
Code: Select all
<?php
header ("Content-type: image/jpg");
$img_handle = ImageCreate (230, 20) or die ("Cannot Create image");
$back_color = ImageColorAllocate ($img_handle, 0, 10, 10);
$txt_color = ImageColorAllocate ($img_handle, 233, 114, 191);
ImageString ($img_handle, 31, 5, 5, "My first Program with GD", $txt_color);
ImagePng ($img_handle);
?>
This is the output:
Code: Select all
‰PNG IHDRæ£þÓêPLTE ér¿`ŽLÚIDAT(‘åбAàŸMhF®!ža’+(„WÙË&ª;‘x
Ambush Commander
DevNet Master
Posts: 3698 Joined: Mon Oct 25, 2004 9:29 pm
Location: New Jersey, US
Post
by Ambush Commander » Thu Jul 12, 2007 4:02 pm
Your displaying a PNG file as a JPEG file. Change your header.
coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Thu Jul 12, 2007 9:11 pm
I fixed that.. but I've got same result
Code: Select all
<?php
header ("Content-type: image/png");
$img_handle = ImageCreate (230, 20) or die ("Cannot Create image");
$back_color = ImageColorAllocate ($img_handle, 0, 10, 10);
$txt_color = ImageColorAllocate ($img_handle, 233, 114, 191);
ImageString ($img_handle, 31, 5, 5, "My first Program with GD", $txt_color);
ImagePng ($img_handle);
?>
feyd
Neighborhood Spidermoddy
Posts: 31559 Joined: Mon Mar 29, 2004 3:24 pm
Location: Bothell, Washington, USA
Post
by feyd » Thu Jul 12, 2007 9:36 pm
Are you calling this code in the middle of a page?
onion2k
Jedi Mod
Posts: 5263 Joined: Tue Dec 21, 2004 5:03 pm
Location: usrlab.com
Post
by onion2k » Fri Jul 13, 2007 3:15 am
You'll find it useful to debug image development if you change things around a little and add a toggle.. eg:
Code: Select all
<?php
$debug = true;
if ($debug==true) {
error_reporting(E_ALL);
ini_set("error_reporting",TRUE);
ini_set("display_errors", "on");
}
$img_handle = ImageCreate (230, 20) or die ("Cannot Create image");
$back_color = ImageColorAllocate ($img_handle, 0, 10, 10);
$txt_color = ImageColorAllocate ($img_handle, 233, 114, 191);
ImageString ($img_handle, 31, 5, 5, "My first Program with GD", $txt_color);
if ($debug!=true) {
header ("Content-type: image/png");
ImagePng ($img_handle);
}
?>
Now if you call the image script it'll output any errors like a normal script.
tapas_bahirbag
Forum Newbie
Posts: 14 Joined: Sun Aug 06, 2006 6:54 am
Contact:
Post
by tapas_bahirbag » Fri Jul 13, 2007 4:54 am
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]Code: Select all
<?php
header ("Content-type: image/png");
$img_handle = ImageCreate (230, 20) or die ("Cannot Create image");
$back_color = ImageColorAllocate ($img_handle, 0, 10, 10);
$txt_color = ImageColorAllocate ($img_handle, 233, 114, 191);
ImageString ($img_handle, 31, 5, 5, "My first Program with GD", $txt_color);
ImagePng ($img_handle);
?>
This is your code and this is working properly in my localhost.
--
Tapos Pal
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Fri Jul 13, 2007 9:16 am
onion2k wrote: You'll find it useful to debug image development if you change things around a little and add a toggle.. eg:
Code: Select all
<?php
$debug = true;
if ($debug==true) {
error_reporting(E_ALL);
ini_set("error_reporting",TRUE);
ini_set("display_errors", "on");
}
$img_handle = ImageCreate (230, 20) or die ("Cannot Create image");
$back_color = ImageColorAllocate ($img_handle, 0, 10, 10);
$txt_color = ImageColorAllocate ($img_handle, 233, 114, 191);
ImageString ($img_handle, 31, 5, 5, "My first Program with GD", $txt_color);
if ($debug!=true) {
header ("Content-type: image/png");
ImagePng ($img_handle);
}
?>
Now if you call the image script it'll output any errors like a normal script.
I've copied and past the above code ..
it shows nothing
... no error and nothing !!
purinkle
Forum Newbie
Posts: 12 Joined: Fri Jul 13, 2007 6:54 am
Post
by purinkle » Fri Jul 13, 2007 9:19 am
Are you calling the code inside another PHP script or is the code in a separate file of it's own?
coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Fri Jul 13, 2007 9:22 am
feyd wrote: Are you calling this code in the middle of a page?
yes ! ... but I've tried it without being in the middle of the page.. it's says:
Warning: Cannot modify header information - headers already sent by (output started at /localhost/test_graph.php:17) in /localhost/test_graph.php on line 18
‰PNG IHDRæ£þÓêPLTE ér¿`ŽLÚIDAT(‘åбAàŸMhF®!ža’+(„WÙË&ª;‘x
purinkle
Forum Newbie
Posts: 12 Joined: Fri Jul 13, 2007 6:54 am
Post
by purinkle » Fri Jul 13, 2007 9:31 am
I tried it with the debug stuff and it didn't work
Without the debug stuff I got:
Are you sure you have the GD Libraries installed?
onion2k
Jedi Mod
Posts: 5263 Joined: Tue Dec 21, 2004 5:03 pm
Location: usrlab.com
Post
by onion2k » Fri Jul 13, 2007 11:00 am
purinkle wrote: I tried it with the debug stuff and it didn't work
By "it doesn't work" do you mean "it doesn't output an image"? Because it's not supposed to.
feyd
Neighborhood Spidermoddy
Posts: 31559 Joined: Mon Mar 29, 2004 3:24 pm
Location: Bothell, Washington, USA
Post
by feyd » Fri Jul 13, 2007 11:23 pm
[quote="coool"]yes ! ... but I've tried it without being in the middle of the page.. it's says:
Warning: Cannot modify header information - headers already sent by (output started at /localhost/test_graph.php:17) in /localhost/test_graph.php on line 18
‰PNG IHDRæ£þÓêPLTE ér¿`ŽLÚIDAT(‘åбAàŸMhF®!ža’+(„WÙË&ª;‘x
coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Sun Jul 15, 2007 11:48 pm
can you please show me a little example about what you're saying?
just a little one
thanks in advance..
onion2k
Jedi Mod
Posts: 5263 Joined: Tue Dec 21, 2004 5:03 pm
Location: usrlab.com
Post
by onion2k » Mon Jul 16, 2007 4:00 am
coool wrote: can you please show me a little example about what you're saying?
This code will
not work:
page.php ...
Code: Select all
<html>
<head></head>
<body>
<?php
$image = imagecreate(200,200);
header("Content-type: image/png");
imagepng($image);
?>
</body>
</html>
You have to use two separate scripts:
page.php ...
Code: Select all
<html>
<head></head>
<body>
<img src="image.php">
</body>
</html>
image.php ...
Code: Select all
<?php
$image = imagecreate(200,200);
header("Content-type: image/png");
imagepng($image);
?>
The img tag in page.php loads the image generated by image.php.
coool
Forum Commoner
Posts: 45 Joined: Wed Jul 11, 2007 5:51 pm
Post
by coool » Mon Jul 16, 2007 9:23 am
WOW .. it's working
I'm happpyyy.. thaaaanks very much
okay ! .. now how can have a graph ! with x-axis and y-axis taken from one table in MySQL query !
for example:
FruitsTable
fruitName numberAvailable
Apple 2
Orange 8
Banana 5
I want the x-axis to be my fruitName
and the y-axis to be the numberAvailable of the fruit
Query = "SELECT fruitName, numberAvailable FROM FruitsTable"
then ?