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536 lines
9.4 KiB
PHP
536 lines
9.4 KiB
PHP
--TEST--
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Test key(), current(), next() & reset() functions
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--FILE--
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<?php
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/* Prototype & Usage:
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mixed key ( array &$array ) -> returns the index element of the current array position
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mixed current ( array &$array ) -> returns the current element in the array
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mixed next ( array &$array ) -> similar to current() but advances the internal pointer to next element
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mixed reset ( array &$array ) -> Reset the internal pointer to first element
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*/
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$basic_arrays = array (
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array(0), // array with element as 0
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array(1), // array with single element
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array(1,2, 3, -1, -2, -3), // array of integers
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array(1.1, 2.2, 3.3, -1.1, -2.2, -3.3), // array of floats
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array('a', 'b', 'c', "ab", "ac", "ad"), // string array
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array("a" => "apple", "b" => "book", "c" => "cook"), // associative array
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array('d' => 'drink', 'p' => 'port', 's' => 'set'), // another associative array
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array(1 => 'One', 2 => 'two', 3 => "three") // associative array with key as integers
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);
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$varient_arrays = array (
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array(), // empty array
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array(""), // array with null string
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array(NULL),// array with NULL
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array(null),// array with null
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array(NULL, true, null, "", 1), // mixed array
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array(-1.5 => "test", -2 => "rest", 2.5 => "two",
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"" => "string", 0 => "zero", "" => "" ) // mixed array
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);
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echo "*** Testing basic operations ***\n";
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$loop_count = 1;
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foreach ($basic_arrays as $sub_array ) {
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echo "-- Iteration $loop_count --\n";
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$loop_count++;
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$c = count ($sub_array);
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$c++; // increment by one to create the situation of accessing beyond array size
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while ( $c ) {
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var_dump( current($sub_array)); // current element
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var_dump( key($sub_array) ); // key of the current element
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var_dump( next($sub_array) ); // move to next element
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$c --;
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}
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var_dump( reset($sub_array) ); // reset the internal pointer to first element
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var_dump( key($sub_array) ); // access the array after reset
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var_dump( $sub_array ); // dump the array to see that its intact
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echo "\n";
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}
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echo "\n*** Testing possible variations ***\n";
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$loop_count = 1;
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foreach ($varient_arrays as $sub_array ) {
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echo "-- Iteration $loop_count --\n";
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$loop_count++;
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$c = count ($sub_array);
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$c++; // increment by one to create the situation of accessing beyond array size
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while ( $c ) {
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var_dump( current($sub_array)); // current element
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var_dump( key($sub_array) ); // key of the current element
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var_dump( next($sub_array) ); // move to next element
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$c --;
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}
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var_dump( reset($sub_array) ); // reset the internal pointer to first element
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var_dump( key($sub_array) ); // access the array after reset
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var_dump( $sub_array ); // dump the array to see that its intact
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echo "\n";
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}
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/*test these functions on array which is already unset */
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echo "\n-- Testing variation: when array is unset --\n";
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$unset_array = array (1);
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unset($unset_array);
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var_dump( current($unset_array) );
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var_dump( key($unset_array) );
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var_dump( next($unset_array) );
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var_dump( reset($unset_array) );
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echo "\n*** Testing error conditions ***\n";
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//Zero argument, expected 1 argument
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var_dump( key() );
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var_dump( current() );
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var_dump( reset() );
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var_dump( next() );
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// args more than expected, expected 1 argument
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$temp_array = array(1);
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var_dump( key($temp_array, $temp_array) );
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var_dump( current($temp_array, $temp_array) );
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var_dump( reset($temp_array, $temp_array) );
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var_dump( next($temp_array, $temp_array) );
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// invalid args type, valid arguement: array
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$int_var = 1;
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$float_var = 1.5;
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$string = "string";
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var_dump( key($int_var) );
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var_dump( key($float_var) );
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var_dump( key($string) );
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var_dump( current($int_var) );
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var_dump( current($float_var) );
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var_dump( current($string) );
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var_dump( next($int_var) );
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var_dump( next($float_var) );
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var_dump( next($string) );
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var_dump( reset($int_var) );
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var_dump( reset($float_var) );
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var_dump( reset($string) );
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echo "Done\n";
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?>
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--EXPECTF--
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*** Testing basic operations ***
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-- Iteration 1 --
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int(0)
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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int(0)
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int(0)
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array(1) {
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[0]=>
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int(0)
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}
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-- Iteration 2 --
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int(1)
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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int(1)
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int(0)
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array(1) {
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[0]=>
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int(1)
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}
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-- Iteration 3 --
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int(1)
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int(0)
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int(2)
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int(2)
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int(1)
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int(3)
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int(3)
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int(2)
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int(-1)
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int(-1)
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int(3)
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int(-2)
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int(-2)
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int(4)
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int(-3)
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int(-3)
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int(5)
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bool(false)
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bool(false)
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NULL
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bool(false)
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int(1)
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int(0)
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array(6) {
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[0]=>
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int(1)
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[1]=>
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int(2)
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[2]=>
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int(3)
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[3]=>
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int(-1)
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[4]=>
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int(-2)
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[5]=>
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int(-3)
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}
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-- Iteration 4 --
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float(1.1)
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int(0)
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float(2.2)
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float(2.2)
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int(1)
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float(3.3)
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float(3.3)
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int(2)
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float(-1.1)
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float(-1.1)
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int(3)
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float(-2.2)
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float(-2.2)
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int(4)
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float(-3.3)
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float(-3.3)
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int(5)
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bool(false)
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bool(false)
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NULL
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bool(false)
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float(1.1)
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int(0)
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array(6) {
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[0]=>
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float(1.1)
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[1]=>
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float(2.2)
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[2]=>
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float(3.3)
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[3]=>
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float(-1.1)
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[4]=>
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float(-2.2)
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[5]=>
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float(-3.3)
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}
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-- Iteration 5 --
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string(1) "a"
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int(0)
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string(1) "b"
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string(1) "b"
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int(1)
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string(1) "c"
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string(1) "c"
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int(2)
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string(2) "ab"
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string(2) "ab"
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int(3)
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string(2) "ac"
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string(2) "ac"
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int(4)
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string(2) "ad"
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string(2) "ad"
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int(5)
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(1) "a"
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int(0)
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array(6) {
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[0]=>
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string(1) "a"
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[1]=>
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string(1) "b"
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[2]=>
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string(1) "c"
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[3]=>
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string(2) "ab"
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[4]=>
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string(2) "ac"
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[5]=>
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string(2) "ad"
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}
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-- Iteration 6 --
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string(5) "apple"
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string(1) "a"
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string(4) "book"
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string(4) "book"
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string(1) "b"
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string(4) "cook"
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string(4) "cook"
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string(1) "c"
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(5) "apple"
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string(1) "a"
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array(3) {
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["a"]=>
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string(5) "apple"
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["b"]=>
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string(4) "book"
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["c"]=>
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string(4) "cook"
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}
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-- Iteration 7 --
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string(5) "drink"
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string(1) "d"
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string(4) "port"
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string(4) "port"
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string(1) "p"
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string(3) "set"
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string(3) "set"
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string(1) "s"
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(5) "drink"
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string(1) "d"
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array(3) {
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["d"]=>
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string(5) "drink"
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["p"]=>
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string(4) "port"
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["s"]=>
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string(3) "set"
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}
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-- Iteration 8 --
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string(3) "One"
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int(1)
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string(3) "two"
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string(3) "two"
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int(2)
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string(5) "three"
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string(5) "three"
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int(3)
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(3) "One"
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int(1)
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array(3) {
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[1]=>
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string(3) "One"
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[2]=>
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string(3) "two"
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[3]=>
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string(5) "three"
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}
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*** Testing possible variations ***
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-- Iteration 1 --
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bool(false)
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NULL
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bool(false)
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bool(false)
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NULL
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array(0) {
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}
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-- Iteration 2 --
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string(0) ""
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(0) ""
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int(0)
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array(1) {
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[0]=>
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string(0) ""
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}
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-- Iteration 3 --
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NULL
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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NULL
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int(0)
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array(1) {
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[0]=>
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NULL
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}
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-- Iteration 4 --
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NULL
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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NULL
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int(0)
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array(1) {
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[0]=>
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NULL
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}
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-- Iteration 5 --
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NULL
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int(0)
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bool(true)
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bool(true)
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int(1)
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NULL
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NULL
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int(2)
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string(0) ""
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string(0) ""
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int(3)
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int(1)
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int(1)
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int(4)
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bool(false)
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bool(false)
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NULL
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bool(false)
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NULL
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int(0)
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array(5) {
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[0]=>
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NULL
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[1]=>
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bool(true)
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[2]=>
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NULL
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[3]=>
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string(0) ""
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[4]=>
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int(1)
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}
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-- Iteration 6 --
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string(4) "test"
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int(-1)
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string(4) "rest"
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string(4) "rest"
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int(-2)
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string(3) "two"
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string(3) "two"
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int(2)
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string(0) ""
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string(0) ""
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string(0) ""
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string(4) "zero"
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string(4) "zero"
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int(0)
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bool(false)
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bool(false)
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NULL
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bool(false)
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string(4) "test"
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int(-1)
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array(5) {
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[-1]=>
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string(4) "test"
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[-2]=>
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string(4) "rest"
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[2]=>
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string(3) "two"
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[""]=>
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string(0) ""
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[0]=>
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string(4) "zero"
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}
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-- Testing variation: when array is unset --
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Warning: current() expects parameter 1 to be array, null given in %s on line %d
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NULL
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Warning: key() expects parameter 1 to be array, null given in %s on line %d
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NULL
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Warning: next() expects parameter 1 to be array, null given in %s on line %d
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NULL
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Warning: reset() expects parameter 1 to be array, null given in %s on line %d
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NULL
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*** Testing error conditions ***
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Warning: key() expects exactly 1 parameter, 0 given in %s on line %d
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NULL
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Warning: current() expects exactly 1 parameter, 0 given in %s on line %d
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NULL
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Warning: reset() expects exactly 1 parameter, 0 given in %s on line %d
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NULL
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Warning: next() expects exactly 1 parameter, 0 given in %s on line %d
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NULL
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Warning: key() expects exactly 1 parameter, 2 given in %s on line %d
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NULL
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Warning: current() expects exactly 1 parameter, 2 given in %s on line %d
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NULL
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Warning: reset() expects exactly 1 parameter, 2 given in %s on line %d
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NULL
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Warning: next() expects exactly 1 parameter, 2 given in %s on line %d
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NULL
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Warning: key() expects parameter 1 to be array, integer given in %s on line %d
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NULL
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Warning: key() expects parameter 1 to be array, double given in %s on line %d
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NULL
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Warning: key() expects parameter 1 to be array, string given in %s on line %d
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NULL
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Warning: current() expects parameter 1 to be array, integer given in %s on line %d
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NULL
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Warning: current() expects parameter 1 to be array, double given in %s on line %d
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NULL
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Warning: current() expects parameter 1 to be array, string given in %s on line %d
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NULL
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Warning: next() expects parameter 1 to be array, integer given in %s on line %d
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NULL
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Warning: next() expects parameter 1 to be array, double given in %s on line %d
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NULL
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Warning: next() expects parameter 1 to be array, string given in %s on line %d
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NULL
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Warning: reset() expects parameter 1 to be array, integer given in %s on line %d
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NULL
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Warning: reset() expects parameter 1 to be array, double given in %s on line %d
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NULL
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Warning: reset() expects parameter 1 to be array, string given in %s on line %d
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NULL
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Done
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