SubQuery

object
CIBlockElement::SubQuery(
 string strField,
 array arFilter
 );

The method allows using subqueries. Static method.

Call parameters

Parameter	Description
strField	Field name used for filtration. Possible values: ID - by element ID PROPERTY_<PROPERTY_CODE> - by property value, where PROPERTY_CODE - ID or symbolic code for boded property. The property must have the "binded to elements" type.
arFilter	Element filter is the same as in the methodCIBlockElement::GetList with exception that the key IBLOCK_ID or =IBLOCK_ID is applied starting from version 23.0.0. Single value (single iblock ID).

Returned value

Subquery object.

See Also

• CIBlockElement::GetList

Examples

<?
//Select authors who wrote books in 21st century.
if(CModule::IncludeModule('iblock'))
{
  $rsBooks = CIBlockElement::GetList(
    array("NAME" => "ASC"), //Sort by name
    array(
      "IBLOCK_ID" => $AUTHOR_IBLOCK,
      "ACTIVE" => "Y",
      "ID" => CIBlockElement::SubQuery("PROPERTY_AUTHOR", array(
        "IBLOCK_ID" => $BOOK_IBLOCK,
        ">=PROPERTY_PRINT_DATE" => "2000-01-01 00:00:00",
      )),
   ),
   false, // Without grouping
   false,  //without page wise navigation
   array("ID", "IBLOCK_ID", "NAME") // Select only the fields required for display
  );
  while($arBook = $rsBooks->GetNext())
    echo "<li>", $arBook["NAME"],"\n";
}
?>

See Also

• CIBlockElement::GetList