Web Technology and PHP Concepts

These flashcards cover essential vocabulary and definitions from the lecture notes on web technology and PHP concepts.

Sequence

A table in the database that keeps track of the last assigned ID, useful for auto-generating unique identifiers.

nextId() function

A function used to get the next unique ID from a sequence.

Expiration Header

An HTTP response header that specifies how long a resource should be considered fresh by the browser.

Redirection Header

Uses the Location header in HTTP responses to redirect the client to a different URL.

301 Moved Permanently

A status code indicating permanent redirection.

302 Found

A status code indicating temporary redirection.

Serialization

The process of converting any PHP value into a byte stream representation for storage or transmission.

Deserialization

The process of converting a byte stream back into the original PHP value.

Database Specific Method

A connection method using functions that are made for a particular database.

Database Independent Method

A connection method that allows code to work with different databases using the same function.

pg_connect()

A function used to connect to a PostgreSQL database.

DB::connect()

A function from the PEAR DB library used for a database-independent connection.

pgfetchrow()

A function used to process results from a PostgreSQL database.

fetchRow()

A function used to process results with the PEAR DB library.

pgfreeresult()

A function used to free memory after finishing work with PostgreSQL.

free()

A function used to free memory in the database-independent method.