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php的phpExcel类生成excel时列超过26大于Z时如何解决

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Release: 2016-05-26 08:20:37
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本文我们来分享用php的phpExcel类生成的excel当列名超过26列大于Z时的解决方法,供大家参考学习,我们生成excel都会使用phpExcel类,这里就来给大家介绍在生成excel列名超过26列大于Z时的解决办法,这是phpExcel类中的方法,今天查到了,记录一下备忘,代码如下:

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];  
}
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将列的数字序号转成字母使用,代码如下:

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

将列的字母转成数字序号使用,代码如下:

PHPExcel_Cell::columnIndexFromString('AA');

希望本文所述对大家的php程序设计有所帮助.


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