Tag Archives: phpExcel

php生成excel列名,超过26列大于Z的方法

这是phpExcel类中的方法。今天查到了,记录一下备忘。

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];
	}

将列的数字序号转成字母使用:

PHPExcel_Cell::stringFromColumnIndex($i); // 从o开始

将列的字母转成数字序号使用:

PHPExcel_Cell::columnIndexFromString(‘AA’);