Page with Hit Counter PHP Page with Counter
- Slides: 15
Page with Hit Counter
PHP Page with Counter
Read file with count print out count <? php /* open file for reading, read and print count */ $filename= "Hit. Counter. txt"; $file. Pointer = fopen($filename, "r") or die("Problem opening $filename"); $the. Count = fread($file. Pointer, filesize($filename)); print ($the. Count+1); fclose($file. Pointer);
Write file with new count /* open file for writing, write new count the file must have the appropriate permissions especially to be written to */ $file. Pointer = fopen($filename , "w") or die("Problem opening $filename"); $the. Count = $the. Count + 1; $fout= fwrite($file. Pointer, $the. Count); fclose($file. Pointer); ? >
Permissions • In order for the file to be able to be written to, we must change its permissions. • You can view the permissions in Win. SCP. • In Linux there are three basic kinds of permission and three basic actors to whom permission may be given. • The permissions are Read, Write and Execute • The actors are: You (the Owner), Group, World
Permissions seen in Win. SCP
Limiting Access • In order to limit access to the file, but still allow its effect, we are going to place the file into the group for web things, and then give that group write permissions. • The permissions can be changed using Win. SCP by right clicking on the remote file and choosing properties. • But to change the group, we use another Putty.
Win. SCP Right Click/Properties
Can change permissions here, but group is grayed out
http: //www. chiark. greenend. org. uk/~sgtatham/putty/do wnload. html
Pu. TTY Interface
Enter username and password (not echoed). Then use cd (change directory command to get to folder
Use chgrp command to change the file’s group
Alternate way to change permissions
Chmod 764 filename • The first number gives permissions to Owner, the second to Group and the third to World. • The permission come in the order Read, Write, e. Xecute. • So 764 gives – 7 111 Read, Write, and Execute to Owner – 6 110 Read, Write to Group – 4 100 Read to World
