How do you call a constructor for a parent class?
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How can we destroy the cookie?
What is the advantge and disadvantage of mysql_connet() and mysql_pconnect() ? in which condition will you use mysql_connect() and mysql_pconnect().
What is the main difference between require() and include()?
does PHP support foreign key and Rollback?yes or not.if not then why. how will you done these concept in php?
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client side scripting language Vs server side scripting language
What is cookies php?
Does php have block scope?
In how many ways we can retrieve the date in the result set of mysql using PHP?
What are the difference between array_keys() and array_key_exists() 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
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How to enable cURL in PHP?