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--TEST--
Test count() function : usage variations - Pass different data types as $var arg
--FILE--
<?php
/* Prototype : int count(mixed $var [, int $mode])
* Description: Count the number of elements in a variable (usually an array)
* Source code: ext/standard/array.c
*/
/*
* aPass different data types as $var argument to count() to test behaviour
*/
echo "*** Testing count() : usage variations ***\n";
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// get a class
class classA
{
public function __toString() {
return "Class A object";
}
}
// heredoc string
$heredoc = <<<EOT
hello world
EOT;
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $var argument
$inputs = array(
// int data
/*1*/ 0,
1,
12345,
-2345,
// float data
/*5*/ 10.5,
-10.5,
12.3456789000e10,
12.3456789000E-10,
.5,
// null data
/*10*/ NULL,
null,
// boolean data
/*12*/ true,
false,
TRUE,
FALSE,
// empty data
/*16*/ "",
'',
// string data
/*18*/ "string",
'string',
$heredoc,
// object data
/*21*/ new classA(),
// undefined data
/*22*/ @$undefined_var,
// unset data
/*23*/ @$unset_var,
// resource variable
/*24*/ $fp
);
// loop through each element of $inputs to check the behavior of count()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
var_dump( count($input) );
$iterator++;
};
fclose($fp);
echo "Done";
?>
--EXPECTF--
*** Testing count() : usage variations ***
-- Iteration 1 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 2 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 3 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 4 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 5 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 6 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 7 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 8 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 9 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 10 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(0)
-- Iteration 11 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(0)
-- Iteration 12 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 13 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 14 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 15 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 16 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 17 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 18 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 19 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 20 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 21 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
-- Iteration 22 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(0)
-- Iteration 23 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(0)
-- Iteration 24 --
Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d
int(1)
Done
|
