Question
Some user wanted a “grammatically correct” list of categories; not merely displaying all categories of a particular entry, but separating them with a comma and prepending the last one with “and”:
Example: Filed under: Foo, Bar and Splat.
Answer
The solution is to use PHP to write the categories to an array, then loop through it and add “and” at the last but one position:
<?php
// pull the categories into an array, and separate by comma
$categories = explode(",","{categories backspace="1"}{category_name},{/categories}");
// loop through & output all the elements of the array
for ($i = 0; $i < count($categories); $i++) { print $categories[$i];
if (count($categories) > 1) { // make sure no "and" gets added if there's only a single category
if ($i == count($categories)-2) { print ' and '; } // if the last-but-one element comes up, add "and"
// otherwise just add a comma and a space, except after the final element
elseif ($i != count($categories)-1) { print ", "; }
} // close the "$categories > 1" clause
} // close "for" loop
?>
More information: See this thread on the forums for reference
Category:Categories Category:Entries