adds a new sorting rule to collection

$coll->add("name","type");

Parameters:

• name - name of the field.
• type - sorting type: ASC or DESC

See also:

• Sorting

clears collection (deletes all specified sorting rules).

$coll->clear();

Parameters:

• none.

checks if there are some rules in collection for the specified field and returns the related hash.

$index = $coll->index("name");

Parameters:

• name - name of the field

Returns:

• true - if collection contains rule(s) for the specified field.
• false - if collection doesn't contain any rules for the field.

array of all specified sorting rules.

$name = $coll->rules[0]["name"];
$coll->rules[0]["direction"]="DESC";

Properties:

• name - name of related field
• direction - direction of sorting

See also:

• Sorting