PHP | AppendIterator getIteratorIndex() Function Last Updated : 20 Nov, 2019 Comments Improve Suggest changes Like Article Like Report The AppendIterator::getIteratorIndex() function is an inbuilt function in PHP which is used to get the index of the current inner iterator. Syntax: int AppendIterator::getIteratorIndex( void ) Parameters: This function does not accept any parameters. Return Value: This function returns an integer value which is the zero-based index of the current inner iterator. Below programs illustrate the AppendIterator::getIteratorIndex() function in PHP: Program 1: php <?php // Declare an ArrayIterator $arr1 = new ArrayIterator(array("Geeks", "for", "Geeks")); $arr2 = new ArrayIterator(array("Computer", "Science", "Portal")); // Create a new AppendIterator $itr = new AppendIterator; $itr->append($arr1); $itr->append($arr2); // Display the elements foreach ($itr as $key => $val) { echo "Iterator Index: " . $itr->getIteratorIndex() . " Key : " . $key . " Value: " . $val . "\n"; } ?> Output: Iterator Index: 0 Key : 0 Value: Geeks Iterator Index: 0 Key : 1 Value: for Iterator Index: 0 Key : 2 Value: Geeks Iterator Index: 1 Key : 0 Value: Computer Iterator Index: 1 Key : 1 Value: Science Iterator Index: 1 Key : 2 Value: Portal Program 2: php <?php // Declare an ArrayIterator $arr1 = new ArrayIterator( array( "a" => "Geeks", "b" => "for", "c" => "Geeks" ) ); $arr2 = new ArrayIterator( array( "x" => "Computer", "y" => "Science", "z" => "Portal" ) ); // Create a new AppendIterator $itr = new AppendIterator; $itr->append($arr1); $itr->append($arr2); // Display the elements foreach ($itr as $key => $val) { echo "Iterator Index: " . $itr->getIteratorIndex() . " Key : " . $key . " Value: " . $val . "\n"; } ?> Output: Iterator Index: 0 Key : a Value: Geeks Iterator Index: 0 Key : b Value: for Iterator Index: 0 Key : c Value: Geeks Iterator Index: 1 Key : x Value: Computer Iterator Index: 1 Key : y Value: Science Iterator Index: 1 Key : z Value: Portal Reference: https://www.php.net/manual/en/appenditerator.getiteratorindex.php Comment More infoAdvertise with us Next Article PHP | AppendIterator getIteratorIndex() Function jit_t Follow Improve Article Tags : Web Technologies PHP PHP-function Similar Reads PHP | AppendIterator next() Function The AppendIterator::next() function is an inbuilt function in PHP which is used to move the element into the next element. Syntax: void AppendIterator::next( void ) Parameters: This function does not accept any parameters. Return Value: This function does not return any value. 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