PHPExcel导出长数字为什么会被转为科学计数
PHPExcel导出长数字被转为科学计数的原因:因为php在处理大数字时超出了当前环境int型的最大值,于是将其以科学计数法进行存储。解决办法是将对应单元格的格式改为文本类型。
PHPExcel导出长数字为什么会被转为科学计数?
今天在将erp里面的数据导出为excel的时候,发现订单id(一长串数字)变成了科学计数格式。
如下这样的格式:
字符串63114825259831409显示成为6.3114825259831E+16这样的了。
方法一
小编第一想到的就是将对应单元格的格式改为文本。
于是加上如下代码:
$objPHPExcel->getActiveSheet()->getStyle('A')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_TEXT);
的确是成功改成了文本格式,但是问题依旧。
原因是什么呢?
因为php在处理大数字时超出了当前环境int型的最大值,于是将其以科学计数法进行存储。
那么在这里又要解决php在处理大数字的问题:在赋值是对其加上引号。
<?php $num="63114825259831409"; echo $n; ?>
但是应用到phpexcel中,导出并不理想。
方法二
在导出的对应代码的时候,指定数据类型。
$objPHPExcel->getActiveSheet()->setCellValueExplicit('A1',63114825259831409,PHPExcel_Cell_DataType::TYPE_STRING);
方法三
在大数字前面加上空格,使其成为字符串
$objPHPExcel->getActiveSheet()->setCellValue('A', ' '.63114825259831409);
总结
解决PHPExcel导出长数字被转为科学计数的方法,小编推荐使用方法一和方法二,因为小编导出数据是循环的,为了方便就直接使用的在前面加空格的方法。
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