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A session is a logical object formed by the PHP engine to permit you to preserve data across subsequent HTTP requests.
There is only one session object available to your PHP scripts at any time. Data saved to the session by a script can be retrieved by the similar script or another script when requested from the similar visitor.
Sessions are commonly used to kept temporary data to permit multiple PHP pages to offer a complete functional transaction for the similar visitor.
What are stacks? A stack is an abstract data type in which items are additional to and removed only from one end known as TOP. For example, consider the pile of papers on you
Nyquist''s sampling theorem says "if you have a signal that is perfectly band limited to a bandwidth of f0 then you can collect all the information there is in that signal by sampl
Explain about the term E-brokerage briefly. An e-brokerage is an investment house which allows you to buy and sell stocks and acquire investment information through its Web sit
Error-correcting code memory (ECC memory) is a type of computer data storage that can notice and correct the more general kinds of internal data corruption. ECC memory is used in m
What is language of a model? Language of a model is the collection of formulae that use only the relational symbols the model assign and that use every relation symbol with t
Q. Describe the Limitation of FAT16? DOS designers decided to use clusters with as a minimum four sectors in them (so a cluster size of at least 2KB) for all FAT16 hard disks.
What is the chief advantage of using virtual packets instead of frames? The router can't transfer a copy of a frame from one kind of network to another since the frame formats
What is a macro ? How it is defined ? Preprocessor' is a translation phase that is applied to source code before the compiler proper gets its hands on it. Generally, th
What are the disadvantages of a Smart Card? Disadvantages of Smart Cards are as follows: a. The value of money can be depleted and recharged. b. Customers should keep
In the data parallel model, many of the parallel work focus on performing operations on a data set. The data set is usually organized into a common structure, such as an array or a
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