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|
--TEST--
Test array_map() function : usage variations - null value for 'callback' argument
--FILE--
<?php
/*
* Test array_map() by passing null values for $callback argument and testing whether shortest
* array will be extended with empty elements
*/
echo "*** Testing array_map() : null value for 'callback' argument ***\n";
// arrays to be passed as arguments
$arr1 = array(1, 2);
$arr2 = array("one", "two");
$arr3 = array(1.1, 2.2);
// get an unset variable
$unset_var = 10;
unset ($unset_var);
/* calling array_map() with null callback */
echo "-- with null --\n";
var_dump( array_map(null, $arr1, $arr2, $arr3) );
var_dump( array_map(NULL, $arr1, $arr2, $arr3) );
echo "-- with unset variable --\n";
var_dump( array_map(@$unset_var, $arr1, $arr2, $arr3) );
echo "-- with undefined variable --\n";
var_dump( array_map(@$undefined_var, $arr1) );
echo "-- with empty string --\n";
try {
var_dump( array_map("", $arr1, $arr2) );
} catch (TypeError $e) {
echo $e->getMessage(), "\n";
}
echo "-- with empty array --\n";
try {
var_dump( array_map(array(), $arr1, $arr2) );
} catch (TypeError $e) {
echo $e->getMessage(), "\n";
}
echo "Done";
?>
--EXPECT--
*** Testing array_map() : null value for 'callback' argument ***
-- with null --
array(2) {
[0]=>
array(3) {
[0]=>
int(1)
[1]=>
string(3) "one"
[2]=>
float(1.1)
}
[1]=>
array(3) {
[0]=>
int(2)
[1]=>
string(3) "two"
[2]=>
float(2.2)
}
}
array(2) {
[0]=>
array(3) {
[0]=>
int(1)
[1]=>
string(3) "one"
[2]=>
float(1.1)
}
[1]=>
array(3) {
[0]=>
int(2)
[1]=>
string(3) "two"
[2]=>
float(2.2)
}
}
-- with unset variable --
array(2) {
[0]=>
array(3) {
[0]=>
int(1)
[1]=>
string(3) "one"
[2]=>
float(1.1)
}
[1]=>
array(3) {
[0]=>
int(2)
[1]=>
string(3) "two"
[2]=>
float(2.2)
}
}
-- with undefined variable --
array(2) {
[0]=>
int(1)
[1]=>
int(2)
}
-- with empty string --
array_map(): Argument #1 ($callback) must be a valid callback or null, function "" not found or invalid function name
-- with empty array --
array_map(): Argument #1 ($callback) must be a valid callback or null, array must have exactly two members
Done
|
