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Author: Jeffrey F. Hill | Website: http://www.snowvids.com

Part II - Setting up the PHP Script

For this part you can use the attached script by just adding it to the same directory as the PHPCounter.swf.  Not much else has to be done.  I'm going to go over the script in Detail however in the hopes that you'll have a better understanding of how it works and so that you can create your own modifications in the Future.  (For example purposes Line numbers where used here for the example - do not use line numbers in the actual script. 

1) <&quest

2)  $filename = "PHPCounter.txt";

3)  $fp = fopen( $filename,"r"); 
4)  $Old = fread($fp, 100); 
5)  fclose( $fp ); 

6)  $Old = split ("=", $Old, 5);

7)  $NewCount = $Old[1] + '1';

8)  $New = "Count=$NewCount";

9)  $fp = fopen( $filename,"w+"); 
10)  if (flock($fp, 2)) { 
11)  fwrite($fp, $New, 100);} 
12)  fclose( $fp ); 

13)  print "Count=$NewCount";
14)  &quest>

Line 1 - Tells the server to start processing this script as a PHP script. 

Line 2 - Sets the variable filename to the name of the text file that we are going to be using to store the number of visits or Counts.  Remember in PHP whenever you see a $ that indicates a scaler variable.

Line 3 - Opens the text file for reading.  

Line 4 - This line basically places the content of the text file into the variable Old.  

Line 5 - Closes the text file.

Line 6 - This line splits the text file where ever an = sign occurs and puts the two parts into an array that can be referenced as follows:  $Old[0] references the Count part of the string, $Old[1] references the Number part of the string.  This is important because we only want to read and add to the number and not the whole string (Count=Number). 

Line 7 - Adds 1 to the current Count. 

Line 8 - Creates a new string that can be placed into the text file. We need to add the 'Count=' part again because we got rid of it when we split the string into the array.

Line 9 - Opens the file for writing to.

Line 10 - An optional argument that locks the file (file locking) so that we do not write over the same file at the same time - this can cause the Count to reset and may cause other errors.  This is mostly important if you think a large number of people will be visiting your site at any one moment. 

Line 11 - This writes over the current text file with the New value - the count is increased by one.

Line 12 - Closes the text file for writing to.

Line 13 - Prints out Count=(The new Count) which is returned to the Flash movie - the value of Count then appears in the dynamic text box named Count in the Flash movie. 

Line 14 - Ends the PHP script.

That's it for the script.  The last and probably most important thing that your going to have to do is change the permissions of the Text file that your using - in this case: PHPCounter.txt - To 777 you can do this with Telnet by using the command: chmod 777 PHPCounter.txt in the directory in which it resides.  You can also do this with some ftp programs such as ws_ftp. 

» Level Intermediate

Added: 2001-08-23
Rating: 7.86 Votes: 135
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