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I'm not sure I understand the question.<br />
<br />
Are you asking how/what Oracle database to install locally or how to connect to the database you have already installed/created?
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I'm not sure I understand the question.

Are you asking how/what Oracle database to install locally or how to connect to the database you have already installed/created?

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I'm working my way through some Oracle tutorials and I'm learning the rudiments of building apps within Oracle, but today I need to start popping the hood on connecting to an Oracle database and retrieving / displaying info via php on a web page.<br />
<br />
I'm finding lots of tutorials that demo building apps within Oracle, but I've got to access the database through PHP and I want to start kicking the tires on my localhost.<br />
<br />
How do I set it up?
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I'm working my way through some Oracle tutorials and I'm learning the rudiments of building apps within Oracle, but today I need to start popping the hood on connecting to an Oracle database and retrieving / displaying info via php on a web page.

I'm finding lots of tutorials that demo building apps within Oracle, but I've got to access the database through PHP and I want to start kicking the tires on my localhost.

How do I set it up?

Connecting to Oracle Express on a localhost

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.

Oracle Database

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.