append()
Description
void append ( mixed var)void append ( string varname, mixed var [, bool merge])
If you append to a string value, it is converted to an array value and then appended to. You can explicitly pass name/value pairs, or associative arrays containing the name/value pairs. If you pass the optional third parameter of TRUE, the value will be merged with the current array instead of appended.
Technical Note: The merge parameter respects array keys, so if you merge two numerically indexed arrays, they may overwrite each other or result in non-sequential keys. This is unlike the PHP array_merge() function which wipes out numerical keys and renumbers them.
See also append_by_ref(), assign() and get_template_vars()

