Interview Questions

User names and passwords in PHP can be encrypted using md5 function.

MD5 function calculates the md5 hash of a string. It is basically used for encryption. It is also used for digital signature applications, where a large file must be "compressed" in a secure manner.

Example:

Md5($str);

Crypt() function can also be used to encrypt a string,. It used MD5, DES or blow fish algorithms for encryption.

Syntax:

Crypt(str, salt)

Salt is an optional parameter used to increase the number of characters encoded, to make the encoding more secure

When I was working on a software employment team at XYZ Company, we took over one more company and had to turn many clients to a new product in a short period of time. It took a lot of planning, hard work, time and effort, but we were able to finish the project in a timely manner.

Retain -Specifies that retain should be invoked on the object upon assignment. takes ownership of an object

Assign - Specifies that the setter uses simple assignment. Uses on attribute of scalar type like float,int.

It is statement of balances of all the accounts in the ledger prepared to prove the arithmetical accuracy of the books of accounts.

A trial Balance is a list of Debit and Credit or a list of Debit & Credit Balance of all the ledger accounts prepared on any particular date

View:

- Tail raid data representation is provided by a view to access data from its table.

- It has logical structure can not occupy space.

- Changes get affected in corresponding tables.

Materialized view

- Pre calculated data persists in materialized view.

- It has physical data space occupation.

- Changes will not get affected in corresponding tables.

By default the maximum size is 2MB. and we can change the following
setup at php.iniupload_max_filesize = 2M