RE: [PHP] image_create(), header.....
You can save them and then call them up, but then you have to use a cron or
something to empty out the folder. Here's how I save it:
//Image created and everything up here, this is the very end of it
$myTime = time();
ImagePNG($im, ../spool/jp$myTime.png); //this creates a unique name
chmod(../spool/jp$myTime.png, 0666); //leading 0, then the code for the
mode you want
ImageDestroy($im);
print img src='../spool/jp$myTime.png' border=0 width=\520\
GALLERYIMG=\NO\ height=\500\/td;
I hope this helps!
-Natalie
-Original Message-
From: Gerard Samuel [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 2:37 PM
To: PHP
Subject: [PHP] image_create(), header.
Im trying to use dynamic buttons, and Im trying to figure out how to get
around the header call.
I figure use output buffering, but so far Ive only come up with errors.
Anyone see a better way or any errors in my code. Thanks
nb: Uncomment the echo() statement to get the error.
--
?php
//echo 'Heybr';
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button('Hello World');
?
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RE: [PHP] image_create(), header.....
Thanks! I didn't know it was that helpful :-) It's in there now.
-Natalie
-Original Message-
From: Boaz Yahav [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 3:58 PM
To: Leotta, Natalie (NCI/IMS)
Subject: RE: [PHP] image_create(), header.
This looks like a great example to add to weberdev.
would you care to spend 3 minutes and let other PHP developers enjoy from
your knowledge?
You are one click away from doing a good deed :)
http://www.weberdev.com/index.php3?GoTo=addexample.php3
Sincerely
berber
Visit http://www.weberdev.com Today!!!
To see where PHP might take you tomorrow.
-Original Message-
From: Leotta, Natalie (NCI/IMS) [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 8:42 PM
To: 'Gerard Samuel'; PHP
Subject: RE: [PHP] image_create(), header.
You can save them and then call them up, but then you have to use a cron or
something to empty out the folder. Here's how I save it:
//Image created and everything up here, this is the very end of it
$myTime = time();
ImagePNG($im, ../spool/jp$myTime.png); //this creates a unique name
chmod(../spool/jp$myTime.png, 0666); //leading 0, then the code for the
mode you want
ImageDestroy($im);
print img src='../spool/jp$myTime.png' border=0 width=\520\
GALLERYIMG=\NO\ height=\500\/td;
I hope this helps!
-Natalie
-Original Message-
From: Gerard Samuel [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 2:37 PM
To: PHP
Subject: [PHP] image_create(), header.
Im trying to use dynamic buttons, and Im trying to figure out how to get
around the header call.
I figure use output buffering, but so far Ive only come up with errors.
Anyone see a better way or any errors in my code. Thanks
nb: Uncomment the echo() statement to get the error.
--
?php
//echo 'Heybr';
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button('Hello World');
?
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Re: [PHP] image_create(), header.....
You need to put the ob_start() call at the very beginning of your script,
not inside that function. You have to turn output buffering on before ANY
output is generated, if you want to be able to send headers later on.
miguel
On Fri, 24 May 2002, Gerard Samuel wrote:
Im trying to use dynamic buttons, and Im trying to figure out how to get
around the header call.
I figure use output buffering, but so far Ive only come up with errors.
Anyone see a better way or any errors in my code.
Thanks
nb: Uncomment the echo() statement to get the error.
--
?php
//echo 'Heybr';
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button('Hello World');
?
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RE: [PHP] image_create(), header.....
While Natalie's solution is a valid one, i have another
first - the error you're getting is because the headers are sent AS SOON as
you echo, print or output html outside of your ?php ? tags. you're echoing
something before you call ob_start();
second- the reason this doesn't work, is because you're trying to write
binary image bytes into an text html page I think what you want is
something like this (actually 2 scripts):
script1.php :
?php
echo 'Heybr';
echo 'img src=script2.php?theword=Hello+World';
?
script2.php :
?php
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button($_GET[theword]);
?
Original Message Follows
From: Leotta, Natalie (NCI/IMS) [EMAIL PROTECTED]
You can save them and then call them up, but then you have to use a cron or
something to empty out the folder. Here's how I save it:
//Image created and everything up here, this is the very end of it
$myTime = time();
ImagePNG($im, ../spool/jp$myTime.png); //this creates a unique name
chmod(../spool/jp$myTime.png, 0666); //leading 0, then the code for the
mode you want
ImageDestroy($im);
print img src='../spool/jp$myTime.png' border=0 width=\520\
GALLERYIMG=\NO\ height=\500\/td;
I hope this helps!
-Natalie
-Original Message-
From: Gerard Samuel [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 2:37 PM
To: PHP
Subject: [PHP] image_create(), header.
Im trying to use dynamic buttons, and Im trying to figure out how to get
around the header call.
I figure use output buffering, but so far Ive only come up with errors.
Anyone see a better way or any errors in my code. Thanks
nb: Uncomment the echo() statement to get the error.
--
?php
//echo 'Heybr';
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button('Hello World');
?
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Re: [PHP] image_create(), header.....
While Natalie's example, was doable, this one takes the cake for me.
Thank you all for your suggestions
Jerome Houston wrote:
While Natalie's solution is a valid one, i have another
first - the error you're getting is because the headers are sent AS
SOON as you echo, print or output html outside of your ?php ? tags.
you're echoing something before you call ob_start();
second- the reason this doesn't work, is because you're trying to
write binary image bytes into an text html page I think what you
want is something like this (actually 2 scripts):
script1.php :
?php
echo 'Heybr';
echo 'img src=script2.php?theword=Hello+World';
?
script2.php :
?php
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button($_GET[theword]);
?
Original Message Follows
From: Leotta, Natalie (NCI/IMS) [EMAIL PROTECTED]
You can save them and then call them up, but then you have to use a
cron or
something to empty out the folder. Here's how I save it:
//Image created and everything up here, this is the very end of it
$myTime = time();
ImagePNG($im, ../spool/jp$myTime.png); //this creates a unique name
chmod(../spool/jp$myTime.png, 0666); //leading 0, then the code for the
mode you want
ImageDestroy($im);
print img src='../spool/jp$myTime.png' border=0 width=\520\
GALLERYIMG=\NO\ height=\500\/td;
I hope this helps!
-Natalie
-Original Message-
From: Gerard Samuel [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 24, 2002 2:37 PM
To: PHP
Subject: [PHP] image_create(), header.
Im trying to use dynamic buttons, and Im trying to figure out how to get
around the header call.
I figure use output buffering, but so far Ive only come up with errors.
Anyone see a better way or any errors in my code. Thanks
nb: Uncomment the echo() statement to get the error.
--
?php
//echo 'Heybr';
function button($word) {
ob_start();
header(Content-Type: image/png);
$im = ImageCreate(100, 50);
$black = ImageColorAllocate($im, 0, 0, 0);
$white = ImageColorAllocate($im, 255, 255, 255);
$start_x = 50 - (strlen($word) * ImageFontWidth(5) / 2);
$start_y = 25 - ImageFontHeight(5) / 2;
ImageString($im, 5, $start_x, $start_y, $word, $white);
ImagePNG($im);
ImageDestroy($im);
ob_end_flush();
}
button('Hello World');
?
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