[PHP] Maths Problem

[Meredith-Wilks, Richard]

 Hi,
 
 I have a maths question. 
 
 I'm trying to create a html form where a user can enter formula in an
 input box (e.g. '$a + $b - 10') and posts it to PHP. 
 The variables $a and $b are known but the formula can be changed on the
 form (e.g. '$a / $b * 2').
 I want PHP to take the text input, the formula and calculate the result
 and display the results.
 
 How ?
 
 Thanks
 
 Richard

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[PHP] Opening large text files on Windows

[Meredith-Wilks, Richard]

Good afternoon all.

I have a problem with opening a text file in PHP.

The file is test.txt a comma separated file with 62,000 lines (4Mb) of data.
I have extended the execution time to 200 seconds to allow time to read the
file. The code I am using is below.

set_time_limit(200);
$datafile = fopen (text.txt, r);
while (!feof ($datafile)) {
  $array = fgets($datafile, 100);
  if (trim($array)) {
$count = count(explode($Seper, $array));
  } // end if $array
} // end while
fclose ($datafile);
echo $count;

My problem is that the file never finishes. 
The php.exe (running on windows 2000) in the task manager keeps running for
over 20 mins (then I kill it) and explorer keeps waiting for a reply.

Is there a better way to read this file in to check ??

 Richard
 
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[PHP] Progress database

[Meredith-Wilks, Richard]

Help,

Can anyone help me ? 

I have a progress database running and require PHP to read and write to it. 
We have looked at ODBC and would like to avoid that if possible.


 Richard 
 

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[PHP] Pear Image_Graph

[Meredith-Wilks, Richard]

I have been told of an image class called 'Image_Graph'.

Has anyone used it and/or do you have any example code I can follow.

thanks

Richard

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