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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
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