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Hello everyone...!!!! I am new to PHP and have problems using $_SESSIONS , the SESSION variables which I set in one file are not recognised in scripts stored in other Files...I get the error :Undefined index 'XYZ' for any arbitrary variable $_SESSION['XYZ']...Anyone having idea to resolve this issue....Following is the … 
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Hello everyone, I am a beginner Java programmer and need your help in understanding What are Environment variables? I do not use any IDE for Java programming at present and use Command Prompt instead I would like to know about what is a CLASSPATH Variable and Is Classpath variable same … 
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Hello everyone...!! I want to know what exactly is the concept of Abstract Data Types and how is it related to data structures...? I tried some standard books on this topic but found them too complicated for me to understand Thank you 
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Im a beginner level programmer in C and want to know how can I use malloc or calloc functions for dynamic memory allocation without typecasting...?
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