Questions on OOP concepts 1. What are the access specifiers available in php ? Explain 2. What is object cloning ? 3. What are the differences between interface and abstract class ? 4. What is overloading ? 5. What is overriding ? 6. How to prevent function overriding ? 7. What is the use of "final" keyword ? 8. What is static variable ? How will access a static variable ? What is static class ?2 6921
What is happening in the following code $objA = new A(); // A is a class $objB = $objA;
hello myself Atul saini completed mca in 2007 due to personal problem i cant do job.now i really search 4 a job.i dont know where i go i think simple think is learn php anyone help me wat i can do for a job. thanks4 2599
hi abinashg i think u have experience in php plz tell me more about php now i raearlly want to do php wat is the future.my email id email@example.com guide me thanks...........2 2180
How to get path of php.ini with a php script?1 42945
what is PHP accelerator ?2 3764
How can you "tell" MySQL server to cache a query?2 3718
setQuery( $sql );
$user = NULL;
$user = $database->loadObject();
//echo 'Name: ' . $user->name . '
'; echo '
please send me the interview questions and answers to my mail id : firstname.lastname@example.org or email@example.com
How to upload a file (may be a .txt or a .doc file) from a php script/file?1 2441
4 down vote favorite share [g+] share [fb] share [tw] I am developing my site using server side sessions using redis as backend for saving the session. Now the issue which is bothering me is of user leaving the website without logging out. I mean user simply closes the browser which causes the cookie to be deleted. Now session of that user still exists on the server and will not be used again as new login requires creating a new session due to security reasons. To avoid the case where hacker steals the old cookie and use it after user login again with same old session id. In essence user leaves the website without explicitly logging out and his session will be deleted after certain time limit of inaccessibility. I am thinking time limit of 30-60 minutes. Also with every new request from user his cookie will also be updated to keep track of when the user last time accessed the site. But nowadays, people let site remain open for long time without accessing it. For example users open facebook and gmail in new tabs and forget about them for 2-3 hours and still they are not asked to login again. Is letting a 2-3 hours old cooke access the session secure? My concern is someone steals user cookie and use it 2-3 hours later. Thinking on this topic has also forced me to question how facebook manages security if user can use a session where they are not accessing it for long periods of time and still they remain logged in. Or is it not secure for me to keep logged in when am not accessing the site session for longer period of time? It can be the case also there is some pinging mechanism using which sites keep track of user having their site open in a browser and when browser closes they are notified and can work accordingly. My website is a social network and needs all those security and usage features which a social network may need. I am new to web security and web development in general and may be the case where my above questions may seem a little basic. If you feel that is the case kindly point to some good reference where I can read and find answers to my question.
why did u want to leave your past organisation?
what are interfaces and Abstart classes
armstrong number by using php while number is given by the keyboard.?
What is polymorphism?
what is benefit of magento?
i m a B.E,passed out few yrs bak failed to find good job due to less marks now thinkin of a career as PHP developer. is it a lucarative field and wat r career prospects; hv heard dat initial salary is very less bout 6k also most jobs r contrct jobs.pls guide me need ur valuable advice.pls hellppp!! thnx..
Which have the fastest execution between mysql_fetch_array() and mysql_fetch_assoc()
my english is not too good then what we apply for a php programer post
what are the differences between php and perl
What is instantiation?
can you give me an example code of calling java script function in php variable using AJAX.or with out ajax??????
is that "enumerated array" equal to "numeric array"?
What is different between software and app
am from coimbatore.am learning php&mysql. what will be the approx salary for me if i get a job in coimbatore.