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--TEST-- Test sizeof() function : usage variations - for all scalar types and resource variable --FILE-- <?php /* Prototype : int sizeof($mixed var[, int $mode]) * Description: Counts an elements in an array. If Standard PHP library is installed, * it will return the properties of an object. * Source code: ext/standard/basic_functions.c * Alias to functions: count() */ echo "*** Testing sizeof() : usage variations ***\n"; echo "--- Testing sizeof() for all scalar types in default,COUNT_NORMAL and COUNT_RECURSIVE mode ---\n"; // get a resource variable $fp = fopen(__FILE__, "r"); // array containing all scalar types $values = array ( // int values /* 1 */ 0, 1, // float values /* 3 */ 10.5, -10.5, 12.3456789000e10, 12.3456789000E-10, /* 7 */ .5, // NULL values /* 8 */ NULL, null, // boolean values /* 10 */ TRUE, FALSE, true, /* 13 */ false, // string data /* 14 */ "", '', "string", /* 17 */ 'string', // undefined variable @$undefined_var, // resource variable /* 19 */ $fp ); // loop through the each value of the array for 'var' argument and check the behaviour of sizeof() $counter = 1; for($i = 0; $i < count($values); $i++) { echo "-- Iteration $counter --\n"; $var = $values[$i]; echo "Default Mode: "; var_dump( sizeof($var) ); echo "\n"; echo "COUNT_NORMAL Mode: "; var_dump( sizeof($var, COUNT_NORMAL) ); echo "\n"; echo "COUNT_RECURSIVE Mode: "; var_dump( sizeof($var, COUNT_RECURSIVE) ); echo "\n"; $counter++; } echo "Done"; ?> --EXPECTF-- *** Testing sizeof() : usage variations *** --- Testing sizeof() for all scalar types in default,COUNT_NORMAL and COUNT_RECURSIVE mode --- -- Iteration 1 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 2 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 3 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 4 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 5 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 6 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 7 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 8 -- Default Mode: int(0) COUNT_NORMAL Mode: int(0) COUNT_RECURSIVE Mode: int(0) -- Iteration 9 -- Default Mode: int(0) COUNT_NORMAL Mode: int(0) COUNT_RECURSIVE Mode: int(0) -- Iteration 10 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 11 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 12 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 13 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 14 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 15 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 16 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 17 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) -- Iteration 18 -- Default Mode: int(0) COUNT_NORMAL Mode: int(0) COUNT_RECURSIVE Mode: int(0) -- Iteration 19 -- Default Mode: int(1) COUNT_NORMAL Mode: int(1) COUNT_RECURSIVE Mode: int(1) Done