which.bat

@echo off
setlocal
if "%1" == "" goto noArg

set fullpath=%~$PATH:1
if "%fullpath%" == "" goto notFound
echo Found in PATH: %fullpath%
goto end

:noArg
echo No Argument specified
goto end

:notFound
echo Argument "%1" not found in PATH


:end
endlocal

Bad Request in apache? Not able to start server?

After installing apache in windows, you may see problems like

Invalid request or Bad request..

This may be because of another program which already using port 80.
you can debug this kind of problems using a command which list
all ports currently in use and program names too

use this command to see which program is using which port
C:\>netstat -a -b -n -o

get PID from above program, and go to task manager to get program / application
name.

In my case svchost is using :http port by default. its may be virus. i terminated it

and you can also see hosts file in
C:\WINDOWS\system32\drivers\etc for any errors.


or if some know program is using 80 port (like tomcat, weblogic...etc) then you
can configure other port like 8888 in httpd.conf ( apache_home/conf)

pache2: Could not reliably determine the server’s fully qualified domain name, using 127.0.0.1 for ServerName

To fix it, we need to edit the /etc/apache2/httpd.conf or /etc/apache2.conf and add the following line:

ServerName nameofserver

hosts file in windows

C:\WINDOWS\system32\drivers\etc\hosts

Add machines:

127.0.0.1 localhost

Code Names for JDK?

J2SE 5.0 Tiger

J2SE 6.0 Mustang

PHP program to read a table from MYSQL?

\n";
echo"
student No
Student Name
Student fee
";

while($row = mysql_fetch_row($resultset)){
echo "\n";

foreach($row as $val){
echo "$val\n";
}
echo "\n";
}
echo "";

mysql_select_db($database_name);
mysql_close();
?>

Installing Apache, PHP,MYSQL?

Step 1:
===================================================
Install Apache http server to c:\Apache2.2.11

Run Apache and test http://localhost

we can configure http port, server root, document root...etc
in c:\Apache2.2.11\conf\httpd.conf


Step 2:
====================================================
install or unzip PHP 5 to c:\php5.2.6

create php.ini in c:\php5.2.6
make sure php5apache2_2.dll is in c:\php5.2.6


Step 3: Link Apache and PHP.
======================================================
Open httpd.conf in c:\Apache2.2.11\conf

add following three lines in LoadModules area

#Let apache where php DLL present to process php files
LoadModule php5_module "c:/php5.2.6/php5apache2_2.dll"


#Let apache know php can be handled
AddType application/x-httpd-php .php

# let Apache know path to php.ini
PHPIniDir "c:/php5.2.6"

You can test php configuration. create a php fiel phpinfo.php in htdocs of
apache server. then issue
http://localhost/phpinfo.php

phpinfo.php
------------
phpinfo();
?>


Step 4: Configure MySQL
===========================================
install MYSQL server to c:\mysql5.1
start mysql server from command prompt ( if you havent installed
mySQL as service. we can choose this option while installaiton)

cmd > mysqld (press enter)


Then log into mySQL

cmd> mysql -u root (press Enter) .you may need to enter password
using -p option (if you set root password in installaiton)

Now see list of databases
mysql> show databases;

To see list of existing users,

mysql> select user,host,password from mysql.user;

Here mysql is MYSQL server system database to keep system tables

to create new database
mysql> create database if not exists wp436;

to create new user

mysql> create user 'suresh'@'localhost' identified by 'suresh123';


Then to grant all privileges to wp436 to user suresh,

mysql>use wp436;
mysql> grant select,insert,update,delete,create,drop on wp436.* to 'suresh'
identified by 'suresh123';


Now user is ready for login;






cmd> mysql -u suresh -p (press enter.prompt for password)

now user can see list of databases having access

mysql>show databases;


Now create a table in wp436 database
user first select the database

mysql> use wp436;

mysql>create table student(sno integer(6),sname varchar(50),sfee double(8,2),primary key(sno));


Now insert data

mysql> insert into student values(100,'aaa',1000);

now commit,

mysql> commit;


Step 5: Connect PHP and MYSQL
====================================

modify php.ini to enable

extension=php_mysql.dll
extension=php_mysqli.dll

And copy the "php_mysql.dll" to c:\WINDOWS, and the "libmysql.dll" to the c:\WINDOWS\system32. You will find these dlls in the ext directory in the PHP installation directory.

we can do more changes in [MYSQL] section of php.ini

Note: irritation with beep sound provided by msql?
use cmd> net stop beep :)



Are you getting could not connect can't connect to mySQL server on localhost(10061)

Sol: Checl mysqld is running or not. if not run it
cmd>mysqld



Step 6: Sample PHP Program to test db connection:
=======================================================





call this php file using

http://localhost/dbtest.php