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|
--TEST--
Test each() function : usage variations - arrays of different data types
--FILE--
<?php
/* Prototype : array each(array $arr)
* Description: Return the currently pointed key..value pair in the passed array,
* and advance the pointer to the next element
* Source code: Zend/zend_builtin_functions.c
*/
/*
* Pass arrays of different data types as $arr argument to each() to test behaviour
*/
echo "*** Testing each() : 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 as $arr
$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 each()
$iterator = 1;
foreach($inputs as $key => $input) {
echo "\n-- Iteration $iterator: $key data --\n";
var_dump( each($input) );
$iterator++;
};
fclose($fp);
echo "Done";
?>
--EXPECTF--
*** Testing each() : usage variations ***
-- Iteration 1: int data --
array(4) {
[1]=>
int(0)
["value"]=>
int(0)
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 2: float data --
array(4) {
[1]=>
float(10.5)
["value"]=>
float(10.5)
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 3: null data --
array(4) {
[1]=>
NULL
["value"]=>
NULL
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 4: bool data --
array(4) {
[1]=>
bool(true)
["value"]=>
bool(true)
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 5: empty string data --
array(4) {
[1]=>
string(0) ""
["value"]=>
string(0) ""
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 6: empty array data --
bool(false)
-- Iteration 7: string data --
array(4) {
[1]=>
string(6) "string"
["value"]=>
string(6) "string"
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 8: object data --
array(4) {
[1]=>
object(classA)#%d (0) {
}
["value"]=>
object(classA)#%d (0) {
}
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 9: undefined data --
array(4) {
[1]=>
NULL
["value"]=>
NULL
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 10: unset data --
array(4) {
[1]=>
NULL
["value"]=>
NULL
[0]=>
int(0)
["key"]=>
int(0)
}
-- Iteration 11: resource data --
array(4) {
[1]=>
resource(%d) of type (stream)
["value"]=>
resource(%d) of type (stream)
[0]=>
int(0)
["key"]=>
int(0)
}
Done
|
