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|
--TEST--
Test array_shift() function : usage variations - Pass arrays of different data types
--FILE--
<?php
/* Prototype : mixed array_shift(array &$stack)
* Description: Pops an element off the beginning of the array
* Source code: ext/standard/array.c
*/
/*
* Pass arrays where values are of one data type to test behaviour of array_shift()
*/
echo "*** Testing array_shift() : 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 $stack 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 array_shift
$iterator = 1;
foreach($inputs as $key => $input) {
echo "\n-- Iteration $iterator: $key data --\n";
var_dump( array_shift($input) );
var_dump($input);
$iterator++;
};
fclose($fp);
echo "Done";
?>
--EXPECTF--
*** Testing array_shift() : usage variations ***
-- Iteration 1: int data --
int(0)
array(3) {
[0]=>
int(1)
[1]=>
int(12345)
[2]=>
int(-2345)
}
-- Iteration 2: float data --
float(10.5)
array(4) {
[0]=>
float(-10.5)
[1]=>
float(123456789000)
[2]=>
float(1.23456789E-9)
[3]=>
float(0.5)
}
-- Iteration 3: null data --
NULL
array(1) {
[0]=>
NULL
}
-- Iteration 4: bool data --
bool(true)
array(3) {
[0]=>
bool(false)
[1]=>
bool(true)
[2]=>
bool(false)
}
-- Iteration 5: empty string data --
string(0) ""
array(1) {
[0]=>
string(0) ""
}
-- Iteration 6: empty array data --
NULL
array(0) {
}
-- Iteration 7: string data --
string(6) "string"
array(2) {
[0]=>
string(6) "string"
[1]=>
string(11) "hello world"
}
-- Iteration 8: object data --
object(classA)#%d (0) {
}
array(0) {
}
-- Iteration 9: undefined data --
NULL
array(0) {
}
-- Iteration 10: unset data --
NULL
array(0) {
}
-- Iteration 11: resource data --
resource(%d) of type (stream)
array(0) {
}
Done
|
