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<?php // RAY_session_test.php
// DEMONSTRATE HOW PHP SESSIONS WORK
// MAN PAGE HERE: http://php.net/manual/en/function.session-start.php
// START THE SESSION (DO THIS FIRST, UNCONDITIONALLY, IN EVERY PHP SCRIPT ON EVERY PAGE)
// INITIALIZE THE SESSION ARRAY TO SET A DEFAULT VALUE
if (empty($_SESSION["cheese"])) $_SESSION["cheese"] = 1;
// SEE IF THE CORRECT SUBMIT BUTTON WAS CLICKED
// ADD ONE TO THE CHEESE
// RECOVER THE CURRENT VALUE FROM THE SESSION ARRAY
$cheese = $_SESSION['cheese'];
// END OF PROCESSING SCRIPT - CREATE THE FORM USING HEREDOC NOTATION
$form = <<<ENDFORM
Currently, SESSION["cheese"] contains: $cheese<br/>
<input type="submit" value="increment this cheese" name="fred" />
<input type="submit" value="leave my cheese alone" name="john" />
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