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--TEST--
Test array_flip() function : usage variations - 'input' argument with repeatitive keys and values
--FILE--
<?php
/* Prototype : array array_flip(array $input)
* Description: Return array with key <-> value flipped
* Source code: ext/standard/array.c
*/
/*
* Using different types of repeatitive keys as well as values for 'input' array
*/
echo "*** Testing array_flip() : 'input' array with repeatitive keys/values ***\n";
// array with numeric key repeatition
$input = array(1 => 'value', 2 => 'VALUE', 1 => "VaLuE", 3.4 => 4, 3.4 => 5);
var_dump( array_flip($input) );
// array with string key repeatition
$input = array("key" => 1, "two" => 'TWO', 'three' => 3, 'key' => "FOUR");
var_dump( array_flip($input) );
// array with bool key repeatition
$input = array(true => 1, false => 0, TRUE => -1);
var_dump( array_flip($input) );
// array with null key repeatition
$input = array(null => "Hello", NULL => 0);
var_dump( array_flip($input) );
// array with numeric value repeatition
$input = array('one' => 1, 'two' => 2, 3 => 1, "index" => 1);
var_dump( array_flip($input) );
//array with string value repeatition
$input = array('key1' => "value1", "key2" => '2', 'key3' => 'value1');
var_dump( array_flip($input) );
echo "Done"
?>
--EXPECTF--
*** Testing array_flip() : 'input' array with repeatitive keys/values ***
array(3) {
["VaLuE"]=>
int(1)
["VALUE"]=>
int(2)
[5]=>
int(3)
}
array(3) {
["FOUR"]=>
string(3) "key"
["TWO"]=>
string(3) "two"
[3]=>
string(5) "three"
}
array(2) {
[-1]=>
int(1)
[0]=>
int(0)
}
array(1) {
[0]=>
string(0) ""
}
array(2) {
[1]=>
string(5) "index"
[2]=>
string(3) "two"
}
array(2) {
["value1"]=>
string(4) "key3"
[2]=>
string(4) "key2"
}
Done