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Things to know about PHP before going into an interview or exam.


An array of variables passed in the URL


An array of variables passed with <input /> data


Similar to mysql_fetch_array(), but cannot be accessed by integer offset


Returns an array that corresponds to the fetched row of MySQL data and moves the internal data pointer ahead


The name of the #! used to designate the location of the PHP binary—this is used to make scripts executable at the command line


Uses two arguments: constant name and constant definition


The array that stores variables specific to a user's visit

Magic Constant

Predefined constants such as __LINE__, __FILE__, __FUNCTION__, __CLASS__ and __METHOD__


The prefix for a dynamic variable, also known as a variable variable

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