Ask Your Question » PHP http://askbahar.com Lets Talk Thu, 29 Sep 2011 05:48:06 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 How to add scheduled task to run php scripts in Windows http://askbahar.com/2011/04/22/add-scheduled-task-to-run-php-scripts-in-windows/ http://askbahar.com/2011/04/22/add-scheduled-task-to-run-php-scripts-in-windows/#comments Fri, 22 Apr 2011 07:20:24 +0000 Habib Ullah Bahar http://askbahar.com/?p=124 Few days ago, for one of our PHP / MySQL project, we were needed to run two php scripts at every minute. We usually develop/deploy our projects in LAMP environment, where we use crontab for our scheduled tasks. But our client have wanted us to run the system in Windows. So we have chosen  [...]]]> Few days ago, for one of our PHP / MySQL project, we were needed to run two php scripts at every minute. We usually develop/deploy our projects in LAMP environment, where we use crontab for our scheduled tasks. But our client have wanted us to run the system in Windows. So we have chosen  XAMPP. To run our two php scripts every 1 & 2 minute, we thought of developing a simple tool for windows which would run at background and execute those two php scripts. Fortunately we have found about schtasks, a native scheduler in Windows to run scheduled task smoothly in command prompt.

I will not describe our actual situation, rather I will demonstrate with 2 simple php scripts.

1. Create a directory in your htdocs folder inside XAMPP installation directory. In my case, it was C:\xampplite\htdocs\test

2. Create two php scripts, test1.php and test2.php inside test directory using the following respective code.
[php]<?php
//test1.php
//creates, appends current time in a file called dump1.txt
date_default_timezone_set(‘Asia/Dacca’);
$time = date(‘Y-m-d H:i:s’);
$file = "C:/xampplite/htdocs/test/dump1.txt";
file_put_contents($file,"job1 run on: $time\r\n", FILE_APPEND);
?>[/php]
[php]<?php
//test2.php
//creates, appends current time in a file called dump2.txt
date_default_timezone_set(‘Asia/Dacca’);
$time = date(‘Y-m-d H:i:s’);
$file = "C:/xampplite/htdocs/test/dump2.txt";
file_put_contents($file,"job2 run on: $time\r\n", FILE_APPEND);
?>[/php]

3. create a batch file php_service_creator.bat with the following code.
[vb]
SCHTASKS /Create /RU SYSTEM /SC MINUTE /MO 1 /TN "test_sch_task1" /TR "C:\xampplite\php\php-win.exe -f C:\xampplite\htdocs\test\test1.php"
SCHTASKS /Create /RU SYSTEM /SC MINUTE /MO 5 /TN "test_sch_task2" /TR "C:\xampplite\php\php-win.exe -f C:\xampplite\htdocs\test\test2.php"
[/vb]

1. test_sch_task1 task will run on every minute.
2. test_sch_task2 task will run on every fifth minute.

to understand the used (and other possible) parameters, please visit this link

4. Run just created php_service_creator.bat. Please note that you have to run this from an account with administrative privileges.

5. After about 20 minutes, check C:/xampplite/htdocs/test/dump1.txt & C:/xampplite/htdocs/test/dump2.txt files for output.

6. To check/view all the added scheduled tasks, type schtasks in command prompt.

7. To delete any scheduled task, type schtasks /Delete /TN TASK_NAME_FOR_DELETE in command prompt.

I hope it helps some people like me.

Comments, suggestions are appreciated :)

]]> http://askbahar.com/2011/04/22/add-scheduled-task-to-run-php-scripts-in-windows/feed/ 0 What is the difference between the variables of Python and other language http://askbahar.com/2010/10/25/difference-between-variables-of-python-and-other-language/ http://askbahar.com/2010/10/25/difference-between-variables-of-python-and-other-language/#comments Mon, 25 Oct 2010 14:31:11 +0000 Habib Ullah Bahar http://askbahar.com/?p=104 If you are from C/C++/Java and started learning Python, this should be an interesting topic for you.

In languages like C, C++, Java, PHP etc a variable is a memory location where its value is saved. When you copy a variable into another variable, both of them still in existence and you can use both [...]]]> If you are from C/C++/Java and started learning Python, this should be an interesting topic for you.

In languages like C, C++, Java, PHP etc a variable is a memory location where its value is saved. When you copy a variable into another variable, both of them still in existence and you can use both of them.

But in Python, its different. As a matter of fact Python don’t have any variables, it has ‘name’ or ‘identifier’ attached to an object (everything in Python is an object).

Let me clear this using an example:

In other language:

int a_variable = 1; //Here a_variable has a value of 1.

a_variable = 2; //Now a_variable has an updated value of 2.

int another_variable = a_variable; //Now another_variable is a new variable with a value of 2.

int sum = a_variable + another_variable; //you can still use both of the variables.

In Python:

a_variable = 1  #Here integer object 1 (see, everything is an object) has a name tag (or identifier) ‘a_variable’

a_variable = 2 #Now a_variable name tag is now attached to integer object 2. Old integer object 1 can’t be accessed via a_variable anymore.

another_variable = a_variable #Now both another_variable and a_variable name tag is attached to integer object 2.

Though we still call them variables in Python, but you see, they behave differently (almost like the pointers in C).

I hope it helps. Let me know your comments :)

]]> http://askbahar.com/2010/10/25/difference-between-variables-of-python-and-other-language/feed/ 1