Is null in php?
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What is empty () in php?
How do I get csrf token?
Should I use mysqli or pdo?
What is call by reference in php?
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
what are the rules to be followed at the time of declaring a variable?,what is the purpose of var_dump()function in php,syntax of ternary operator()in php,difference between drop a table and truncate a table...
How to delete an element from an array?
How to set session.gc_divisor properly?
What are the core OOP’s concepts?
What are the __construct() and __destruct() methods in a php class?
How can we determine whether a php variable is an instantiated object of a certain class?
Write a program in php to print a table of a number?