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File: array-iterator.php
<?php /*! * This class can be used to traverse an arbitrary array, and simplifies the creation of standalone template functions that * rely on database data or array-driven data. */ class WPtouchArrayIterator { var $array; //! The array the iterator is meant to traverse var $cur_pos; //! The current position in the iterator, 0 based var $count; //! A count of all the items in the array var $cur_key; //! The array key for the current item function WPtouchArrayIterator( $a ) { $this->array = $a; $this->cur_pos = 0; $this->count = count( $a ); $this->cur_key = false; @reset( $this->array ); } /*! \brief Used to reset the array iterator back to its initial position * * This method resets the array iterator back to its initial position. It should be called prior to any attempt to traverse the array a second time. */ function rewind() { $this->cur_pos = 0; } /*! \brief Checks to see whether there are any items available to traverse * * This method checks to see if there are any items in the array that can be traversed. * * \returns True if there are elements in the array, false if there are not. * * \example array_iterator_loop.php * This is an example of typical usage of this class: */ function have_items() { $has_items = ( $this->cur_pos < $this->count ); if ( !$has_items ) { // force a reset after returning false $this->cur_pos = 0; reset( $this->array ); } return $has_items; } /*! \brief Returns the next available item in the array * * This method returns the next available item in the array. This method is meant to be called in a loop using have_items(). * * \returns The next available item */ function the_item() { if ( $this->cur_pos == 0 ) { $item = current( $this->array ); $this->cur_key = key( $this->array ); } else { $item = next( $this->array ); $this->cur_key = key( $this->array ); } $this->cur_pos++; return $item; } /*! \brief Returns the current array traversal position. * * This method returns current array traversal position. * * \returns The position in the array traversal. This value is 0 immediately after object creation, or after calling rewind(). */ function current_position() { return $this->cur_pos; } /*! \brief Returns the array key for the current item * * This method returns the array key for the current item. * * \returns The array key of the current item */ function the_key() { return $this->cur_key; } }