LanWall – Free PHP Comment Wall for LAN users! Opensource!

Live Demo Here!

Screenshots:

LanWall is a PHP-based project for creating community among users connected in a Local Area Network (LAN). Users can post messages in the wall and make replies.

In administrative mode, admin can modify comments & posts, ban certain IPs, restrict access or reset anything.

Pros:

• Requires no database! You do not need any database server. Unzip and use!

Cons:

• Requires a web server, i.e Apache/Xampp. Requires PHP
• Not coded in Object-oriented fashion, kinda hard to edit codes 😦

The product is released as opensource and can be redistributed or modified keeping the file license.php intact.

OpenSource Project released by
PROGmaatic Developer Network

For bug reports feel free to mail the author

Download Links

Current Version: 1.0 beta:  Download from SourceForge.net

Python MySQLdb equivalent for PHP’s mysql_insert_id()

What you’re looking for is lastrowid property of a cursor object.

Code:

import MySQLdb # MySQLdb module must be installed on the system
connection = MySQLdb.connect(...) # Details skipped
cursor = connection.cursor()
query = "INSERT INTO ... " # put query here
cursor.execute(query)
print cursor.lastrowid # BINGO! This will print the id (auto-increment column) of the last inserted row
# Other codes here

Thanks to this article on the Internet

PHP Fatal error: Cannot access empty property in

Are you trying to access any object’s property (variables/functions) using: $this->$property ?

Check out the red $ should not appear before object properties. In contrast:

<?php
	class A{
		$b = "some value";

		public function get_b(){
			return $this->$b;	// WRONG !!!
		}
	}

	// Using the class

	$myObject = new A();
	echo $myObject-$get_b();	// WRONG!!!
?>

the above code segment is wrong. You should use $ only once – before ‘ this’ only. No need to use $ sign before class variables or methods.

Correct version of the above code segment:

<?php
	class A{
		$b = "some value";

		public function get_b(){
			return $this->b;
		}
	}

	// Using the class

	$myObject = new A();
	echo $myObject-get_b();
?>

C style For loop in Python

A for loop in C/C++/PHP/Java Or many well-known programming language will appear as:

int loopStartVariable = 0;
int loopEndVariable = 5;
for(i=loopStartVariable; i < loopEndVariable; i++){
	// do something with i
}

Python has no C-style for loop, which is has is for in loop like foreach loop available in PHP.

To achive the same goal as the code snippet written in C above, we may write following code in python:

loopStartVariable = 0;
loopEndVariable = 5;
for i in range(loopStartVariable, loopEndVariable):
	# Do something with i
print "loop ends here"

Premature end of script headers

This is a pretty common error appearing in the Apache servers… along with the disgusting Error 500 – Internal server error on the browser. Usually the error indicates that it was unable to send necessary header information correctly.

What makes the problem terrible – it does not explain much of the cause. The best way to solve this problem is to find your apache Log and examine it. Usually the log file is available in /var/log/apache2/error.log file in Linux.

Examine the file for a detailed description. For example, if the error message is associated with preceding –

(13)Permission denied: exec of ‘<location of  the file>’ failed

– message, then your script is not marked as executable. Give file permission to run the file as executable, and your problem will be solved.

What if you can’t find the LOG file?

If you’re not allowed to access the log files in any server, then what to do? You may check the apache.conf file for the location of the log file (usually all hosting providers give access to error logs, you just need to find our where the file resides.) Ask your hosting provider for more help.