Removes a whole column from a multidimensional resultset.

deleteMultidimensionalColumn

/**
 * Removes a whole column from a multidimensional resultset.
 * You could use the array_splice function, this is a bit slower (10.3%) but defragments the empty positions
 * in the internal php array. Use this when removing a lot of columns on big (huge) resultsets.
 *
 * @param $aArray
 * @param $sKey
 * @return bool
 */
function deleteMultidimensionalColumn(&$aArray, $sKey, $bUseSplice = false) {

	if(count($aArray) > 0 && array_key_exists($sKey, $aArray[0])) {

		if ($bUseSplice) {
			$iOffset = array_flip(array_keys($aArray[0]))[$sKey];
		}

		return array_walk($aArray, function (&$mVal) use ($sKey, $bUseSplice) {

			if($bUseSplice) {
				// 10.3% langzamer, behoud wel netjes interne array structuur, dus voor
				//grotere array's zou dit minder (interne) fragmentatie op moeten leveren.
				array_splice($mVal, $iOffset, 1);
			} else {
				unset($mVal[$sKey]);
			}
		});
	} else {
		return array();
	}
}