June 2002
Intermediate to advanced
800 pages
16h 3m
English
Content preview from PHP and PostgreSQL: Advanced Web ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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13.1. The Concept of Persistent Database Connections
This section examines the concepts related to persistent database connections in PHP.
Many people think that persistent connections can be used to have one database connection during an entire session. In other words, you connect to the database when you enter an online shop and quit it when you leave the shop. This is not what persistent connections are all about. HTTP is not a connection-oriented protocol, so it is not possible to use the same database handle across more than just one screen. In addition, database handles are automatically destroyed at the end of a PHP script, so it is not possible to pass the database handle to the next screen. This is a very important point that you must ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.