how we can retrive data in pdf along php mysql?

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What are the difference between abstract class and interface in oops?

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class Database { public static $_instance; public static function getInstance() { if(!isset(self::$_instance)) self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME); print_r(self::$_instance); return self::$_instance; } } can any one explain "self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME);" this line

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How to create a text file in PHP?

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What is in php 7?

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we store and display scores of users in different games. In MySQL, records are stored as tuples (user-id, game-id, score). Now we need to support ranks of users, i.e., each user should be informed of his current rank in the community. The challenge is to come up with the best way to store the data in MySQL so that the requirements are efficiently met.

1 Answers   IndiaTimes,

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What is __ invoke in php?

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0 Answers   Eniro,

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Is PHP runs on different platforms (Windows, Linux, Unix, etc.)?

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what is array_search() in php?

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What is The difference between ' and " where they can ben in between or outmost and how

2 Answers   Avis Software,

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How do you check if an arraylist is empty?

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