to-sentence.php

<?php

/**
 * This function accepts an array and joins all values in a string separated by
 * a comma except the last value which is preceeded by 'and' instead of a comma
 */
function to_sentence( $array = array() ) {
	if( empty( $array ) || ! is_array( $array ) ) {
		return $array;
	}
	
	switch( count( $array ) ) {
		case 1:
			$string = array_pop( $array );
			break;
		case 2:
			$string = implode( ' and ', $array );
			break;
		default:
			$last_string = array_pop( $array );
			$string = implode( ', ', $array ) . ' and ' . $last_string;
			break;
	}
	
	return $string;
}

//EOF