How to find out if a cell has a date value using PHPExcel?

Question

PHP

The problem is that in the Date format, the values ​​come in the form of an integer, for example - 43811
How to find out that the date is stored in the cell?

Answer 1

Who cares, you can use the isDateTime function for each cell and check the format. The only negative is that the file must be opened in ReadDataOnly = false mode
$objReader->setReadDataOnly(false);

Answer 2

Based on the general list of columns, by the elimination method and with further verification for the correct date.