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|
--TEST--
Test current() function : usage variations - arrays containing different data types
--FILE--
<?php
/* Prototype : mixed current(array $array_arg)
* Description: Return the element currently pointed to by the internal array pointer
* Source code: ext/standard/array.c
* Alias to functions: pos
*/
/*
* Pass arrays of different data types as $array_arg to current() to test behaviour
*/
echo "*** Testing current() : 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");
// arrays of different data types to be passed to $array_arg argument
$inputs = array(
// int data
/*1*/ 'int' => array(
0,
1,
12345,
-2345,
),
// float data
/*2*/ 'float' => array(
10.5,
-10.5,
12.3456789000e10,
12.3456789000E-10,
.5,
),
// null data
/*3*/ 'null' => array(
NULL,
null,
),
// boolean data
/*4*/ 'bool' => array(
true,
false,
TRUE,
FALSE,
),
// empty data
/*5*/ 'empty string' => array(
"",
'',
),
/*6*/ 'empty array' => array(
),
// string data
/*7*/ 'string' => array(
"string",
'string',
$heredoc,
),
// object data
/*8*/ 'object' => array(
new classA(),
),
// undefined data
/*9*/ 'undefined' => array(
@$undefined_var,
),
// unset data
/*10*/ 'unset' => array(
@$unset_var,
),
// resource variable
/*11*/ 'resource' => array(
$fp
),
);
// loop through each element of $inputs to check the behavior of current()
$iterator = 1;
foreach($inputs as $key => $input) {
echo "\n-- Iteration $iterator : $key data --\n";
var_dump( current($input) );
$iterator++;
};
fclose($fp);
?>
===DONE===
--EXPECTF--
*** Testing current() : usage variations ***
-- Iteration 1 : int data --
int(0)
-- Iteration 2 : float data --
float(10.5)
-- Iteration 3 : null data --
NULL
-- Iteration 4 : bool data --
bool(true)
-- Iteration 5 : empty string data --
string(0) ""
-- Iteration 6 : empty array data --
bool(false)
-- Iteration 7 : string data --
string(6) "string"
-- Iteration 8 : object data --
object(classA)#%d (0) {
}
-- Iteration 9 : undefined data --
NULL
-- Iteration 10 : unset data --
NULL
-- Iteration 11 : resource data --
resource(%d) of type (stream)
===DONE===
|
