variable discount

[abnfire]

how can i give user 25% discount out of 100 dollars. any idea!

[devinemke]

$price = 100;
$discount_price = $price - ($price * 0.25);
echo $discount_price;

your may want to look at some of PHP's math functions to round your result up or down to the nearest integer

[abnfire]

$12.7125
how can you get this value to 12.71, from 12.7125

[devinemke]

uhh, like i said before, your may want to look at some of PHP's math functions, specifically the round() function.

[abnfire]

$12.7125

if i use round then it will be like $12 only but not 12.71
so any idea how to do this please!

[altexis]

this should do:

$price = 100;
$discount_price = round($price - ($price * 0.25), 2);
echo $discount_price;

However... take extra care of floating point variables meant to be used for currency..
I have this fear because of bad experiences with floating point variables in languages other than PHP.

Make lots of experimenting before you give out your final release.

[devinemke]

$12.7125
if i use round then it will be like $12 only but not 12.71
so any idea how to do this please!

read more carefully about the round() function. you can specify a precision (number of digits after the decimal point).

$num = 12.7125;
echo round ($num, 2); //outputs 12.71

[abnfire]

here by the size untell 4 hight it get the full clear image but after hight 4 in this code it dose not show any part of the image , do you know why?

here is the code:

$row['image'] = "http://www.phpbuilder.com/RealMedia/ads/Creatives/House_InstantMessagingSprg03_1a/imp-spring2003-leo.gif";

$url_file = fopen($row["$field"], "rb");

$local_file = fopen($folder.$row[$id_field].".gif", "w");
$url_image_content = file($row[image]);
$url_image_content = fread($url_file, 500000);
fwrite($local_file, $url_image_content, 800000) or die("error");

[diego25]

Why are you reading 500K but writing 800K? Keep it consistent...

Also, this line is unneccesary:
$url_image_content = file($row[image]);

Also, what happens if the image is more than 500K?

Diego

[abnfire]

can you tell me why this is not working?

$row['image'] = "http://localhost/class_show/app/2.2.7/themes/default/images/inlink2_logo.gif";
$url_file = fopen($row["$field"], "rb") or die("error");
$local_file = fopen($folder.$row[$id_field].".gif", "w") or die("error");
$url_image_content = fread($url_file, 9000000);
fwrite($local_file, $url_image_content, 9000000) or die("error");

[diego25]

You have to tell us how it is not working? Is there an error message? what's the error message? Is the file created? Is the file size 0? etc...

And again, why are you reading only 900K? What if the image is more than 900K?

Diego

[abnfire]

1: my images are not more then 50k.
2: yes. it does create a file and file size is almost match.
3: it get the right width and hieght of the image.
4: it dose not display image at all.
5: when you open the image and c the binary text of the image that you have created you will c that is else then origenail one.
6: if you have a function for copying an image, can you please paste it here?
7: im trying this for almost 2 weeks now.
please help me!

[dannys]

The following code will download an image from a webserver and save it locally, which seems to be what you're after.

$row['image'] = "http://localhost/class_show/app/2.2.7/themes/default/images/inlink2_logo.gif";

if ($url_file = fopen($row[$field],"rb"))
{
	$url_image_content="";

while (!feof($url_file))
	$url_image_content.=fread($url_file,16384);
fclose($url_file);

if ($local_file = fopen($folder.$row[$id_field].".gif", "wb"))
{
	fwrite($local_file,$url_image_content, strlen($url_image_content));
	fclose($local_file);
}
else
{
	die('Could not open local file for writing!');
}
}
else
{
	die('Could not open remote file for reading!');
}

[abnfire]

i found the problem, it was: "wb" not only "w" when opening to write into the file.i useed only "w".
$local_file = fopen($folder.$row[$id_field].".gif", "wb"))

Thank you Dannys.