PHP Manual
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XCIII. General Information
This section holds the most general questions about PHP: what it is and what it does.
Table of Contents
What is PHP?
— What is PHP?
What is the relation between the versions?
— What is the relation between the versions?
Can I run several versions of PHP at the same time?
— Can I run several versions of PHP at the same time?
What are the differences between PHP 3 and PHP 4?
— What are the differences between PHP 3 and PHP 4?
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FAQ: Frequently Asked Questions
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What is PHP?