Explain what is the difference between $var and $$var?


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hello experts good morning to everyone ! at present am now learning LAMP course sir( linux, apache,mysql and php) after finishing this course can i create my own website without investment is it possible ? please can any one tell sir and also tell me how can i upload my project after finishing the project in internet ? please tell the ways sir please send ur valuable suggestions to kiranpulsar2007@gmail.com

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