Reading data from a file
| From: | Brian Higgins | Date: | Fri, 23 Feb 2001 05:48:50 +0000 |
| Subject: | Reading data from a file | ||
| Groups: | php.windows | ||
| Request: | Send a blank email to php-windows+get-5707@lists.php.net to get a copy of this message | ||
Perhaps the php gurus can help with my problem.
I am using php4.0 +windows NT 4.0+Apache to read data from a text file ( a
list of real numbers). I need to have the the data in the form
{data1,data2,data3,...,0}. Here is some code:
$elemdata=file("noisydata.dat");
$number=count($elemdata);
$stringdata="{";
for ($i=0;$i<$number;$i++){
$stringdata.=$elemdata[$i].",";
}
$stringdata.="0}";
So far so good.
Now I need to add this data as a query string to a url:
$url="http://www......?stringdata=$stringdata";
and then read the output back into the browser
$fp1=file($url);
$x=0;
while($fp1[$x])
echo $fp1[$x++];
When I use this approach I get a file handler error. I found that I can get
around the problem by replacing the line
$stringdata.=$elemdata[$i].",";
with
$stringdata.=(string)(real)$elemdata[$i].",";
What gives? In the first instance $elemdata is already string. Why must I go
through two type cast changes to get this to work! I would really like to
know the reason behind this quirk.
Thanks much
Brian