public static function stringFromColumnIndex($pColumnIndex = 0)
	{
		//	Using a lookup cache adds a slight memory overhead, but boosts speed
		//	caching using a static within the method is faster than a class static,
		//		though it's additional memory overhead
		static $_indexCache = array();

		if (!isset($_indexCache[$pColumnIndex])) {
			// Determine column string
			if ($pColumnIndex < 26) {
				$_indexCache[$pColumnIndex] = chr(65 + $pColumnIndex);
			} elseif ($pColumnIndex < 702) {
				$_indexCache[$pColumnIndex] = chr(64 + ($pColumnIndex / 26)) .
											  chr(65 + $pColumnIndex % 26);
			} else {
				$_indexCache[$pColumnIndex] = chr(64 + (($pColumnIndex - 26) / 676)) .
											  chr(65 + ((($pColumnIndex - 26) % 676) / 26)) .
											  chr(65 + $pColumnIndex % 26);
			}
		}
		return $_indexCache[$pColumnIndex];
	}
public static function stringFromColumnIndex($pColumnIndex = 0)
	{
		//	Using a lookup cache adds a slight memory overhead, but boosts speed
		//	caching using a static within the method is faster than a class static,
		//		though it's additional memory overhead
		static $_indexCache = array();

		if (!isset($_indexCache[$pColumnIndex])) {
			// Determine column string
			if ($pColumnIndex < 26) {
				$_indexCache[$pColumnIndex] = chr(65 + $pColumnIndex);
			} elseif ($pColumnIndex < 702) {
				$_indexCache[$pColumnIndex] = chr(64 + ($pColumnIndex / 26)) .
											  chr(65 + $pColumnIndex % 26);
			} else {
				$_indexCache[$pColumnIndex] = chr(64 + (($pColumnIndex - 26) / 676)) .
											  chr(65 + ((($pColumnIndex - 26) % 676) / 26)) .
											  chr(65 + $pColumnIndex % 26);
			}
		}
		return $_indexCache[$pColumnIndex];
	}
public static function stringFromColumnIndex ( $ pColumnIndex = 0 ) { //	Using a lookup cache adds a slight memory overhead, but boosts speed //	caching using a static within the method is faster than a class static, //		though it's additional memory overhead static $ _indexCache = array ( ) ; if ( ! isset ( $ _indexCache [ $ pColumnIndex ] ) ) { // Determine column string if ( $ pColumnIndex < 26 ) { $ _indexCache [ $ pColumnIndex ] = chr ( 65 + $ pColumnIndex ) ; } elseif ( $ pColumnIndex < 702 ) { $ _indexCache [ $ pColumnIndex ] = chr ( 64 + ( $ pColumnIndex / 26 ) ) . chr ( 65 + $ pColumnIndex % 26 ) ; } else { $ _indexCache [ $ pColumnIndex ] = chr ( 64 + ( ( $ pColumnIndex - 26 ) / 676 ) ) . chr ( 65 + ( ( ( $ pColumnIndex - 26 ) % 676 ) / 26 ) ) . chr ( 65 + $ pColumnIndex % 26 ) ; } } return $ _indexCache [ $ pColumnIndex ] ; }
String from columnindex

@param	int $pColumnIndex Column index (base 0 !!!)
@return	string
String from columnindex