array_key_exists.phpt [plain text]
--TEST--
Test array_key_exists() function
--FILE--
<?php
/* Prototype:
* bool array_key_exists ( mixed $key, array $search );
* Description:
* Returns TRUE if the given key is set in the array.
* key can be any value possible for an array index.
* Also also works on objects.
*/
echo "*** Testing basic functionalities ***\n";
/* Arrays with regular values */
$search_arrays = array(
array(1,2,3,4),
array('a','b','c'),
array('abc', 'bcd', 'dcf'),
array("test", "rest", "enjoy"),
array("Name" => "Jack", "Loc" => "Mars", "Id" => "MS123"),
array('Red' => 'Rose', 'I' => 'You'),
array(0 => 'Zero', 1 => 'One', 2 => 'Two', 3 => "Three" ),
array(0.1 => 'Zero', 1.1 => 'One', 2.2 => 'Two', 3.3 => "Three" )
);
/* keys to search in $search_arrays. $keys[0]
is the key to be searched in $search_arrays[0] and so on */
$keys = array( 1, 'a', 2, 4, "Name", "Red", 0, 3 );
$key_counter = 0;
foreach ($search_arrays as $search_array) {
$key = $keys[ $key_counter++ ];
echo "-- Iteration $key_counter --\n";
var_dump( array_key_exists($key, $search_array) );
}
echo "\n*** Testing possible variations ***\n";
// use different keys on each sub array of $search_arrays
$key_variations = array ("", NULL, null, " ", '', "test", 1);
$key_counter = 0;
$key_count = count ( $key_variations );
echo "\n** Variation loop 1 **\n";
$out_loop_count = 0;
foreach ($search_arrays as $search_array) {
$key_counter = 0;
$out_loop_count ++; echo "-- Iteration $out_loop_count --\n";
while ( $key_counter < $key_count ) {
$key = $key_variations[ $key_counter++ ];
var_dump( array_key_exists($key, $search_array) );
}
}
// arrays with variation in elements
$search_arrays_v = array (
array(),
array(NULL),
array(array(), 1, 2),
array(1,2,3, "" => "value", NULL => "value", true => "value" ),
array( array(2,4,5), array ("a","b","d") )
);
// search for $key_variations in each sub array of $search_arrays_v
echo "\n** Variation loop 2 **\n";
$out_loop_count = 0;
foreach ($search_arrays_v as $search_array) {
$key_counter = 0;
$out_loop_count ++; echo "-- Iteration $out_loop_count --\n";
while ( $key_counter < $key_count ) {
$key = $key_variations[ $key_counter++ ];
var_dump( array_key_exists($key, $search_array) );
}
}
echo "\n*** Testing error conditions ***\n";
//Zeor args
var_dump( array_key_exists() );
// first args as array
var_dump( array_key_exists(array(), array()) );
// second args as string
var_dump( array_key_exists("", "") );
// second args a integer
var_dump( array_key_exists(1, 1) );
// second args as NULL
var_dump( array_key_exists(1, NULL) );
// second args as boolean
var_dump( array_key_exists(1, true) );
// first args as boolean
var_dump( array_key_exists(false, true) );
// second args as float
var_dump( array_key_exists(false, 17.5) );
// args more than expected
var_dump( array_key_exists(1, array(), array()) );
// first argument as floating point value
var_dump( array_key_exists(17.5, array(1,23) ) ) ;
echo "\n*** Testing operation on objects ***\n";
class key_check
{
private $private_var = "Priviate var";
protected $protected_var = "Protected var";
public $public_var = "Public var";
public $arr = array("var" => "value", "1" => "one", ""=>"value");
public function print_member()
{
echo $this->$private_var."\n";
echo $this->$protected_var."\n";
echo $this->$public_var."\n";
}
}
$key_check_obj = new key_check; //new object
/* array_key_exists() on an object, it should work on only public member variables */
var_dump(array_key_exists("private_var", $key_check_obj)); // not found, private member
var_dump(array_key_exists("protected_var", $key_check_obj)); // not found, private member
var_dump(array_key_exists("public_var", $key_check_obj)); // found, public member
var_dump(array_key_exists("print_member", $key_check_obj)); // not found, its a function
var_dump(array_key_exists("arr", $key_check_obj)); //found, public member
var_dump(array_key_exists("var", $key_check_obj->arr)); //found, key is in member array
/* error condition, first arguemnt as object */
var_dump( array_key_exists($key_check_obj, $key_check_obj) );
echo "Done\n";
?>
--EXPECTF--
*** Testing basic functionalities ***
-- Iteration 1 --
bool(true)
-- Iteration 2 --
bool(false)
-- Iteration 3 --
bool(true)
-- Iteration 4 --
bool(false)
-- Iteration 5 --
bool(true)
-- Iteration 6 --
bool(true)
-- Iteration 7 --
bool(true)
-- Iteration 8 --
bool(true)
*** Testing possible variations ***
** Variation loop 1 **
-- Iteration 1 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 2 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 3 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 4 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 5 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
-- Iteration 6 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
-- Iteration 7 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 8 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
** Variation loop 2 **
-- Iteration 1 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
-- Iteration 2 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
-- Iteration 3 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
-- Iteration 4 --
bool(true)
bool(true)
bool(true)
bool(false)
bool(true)
bool(false)
bool(true)
-- Iteration 5 --
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(true)
*** Testing error conditions ***
Warning: Wrong parameter count for array_key_exists() in %s on line %d
NULL
Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: array_key_exists(): The second argument should be either an array or an object in %s on line %d
bool(false)
Warning: Wrong parameter count for array_key_exists() in %s on line %d
NULL
Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d
bool(false)
*** Testing operation on objects ***
bool(false)
bool(false)
bool(true)
bool(false)
bool(true)
bool(true)
Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d
bool(false)
Done