Ignore empty cells PHPExcel

问题:

I'm using the library PHPExcel to read data in an Excel file. The problem I'm having, is that when I use something like:

$obj = PHPExcel_IOFactory::load($file); $data = $obj->getActiveSheet()->toArray(null,true,true,true); 

To load my file and convert its content into an array, I get all the columns and rows of my Excel file in my array even those without any data in them. Is there a method or something in the library PHPExcel to tell it to ignore cells in my Excel sheet that do not contain any data? (Instead of having a bunch of empty associative arrays in my $data)

回答1:

If your problem is in getting empty columns that go after real data, and you would like to avoid these, you could do something like this:

$maxCell = $sheet->getHighestRowAndColumn(); $data = $sheet->rangeToArray('A1:' . $maxCell['column'] . $maxCell['row']); 

This will return array representing only the area containing real data.

回答2:

I have this solution for my case

$maxCell = $objWorksheet->getHighestRowAndColumn(); $data = $objWorksheet->rangeToArray('A1:' . $maxCell['column'] . $maxCell['row']); 

return all rows with all empty string as:

[1] => Array         (             [0] =>              [1] =>              [2] =>              [3] =>              [4] =>              [5] =>              [6] =>              [7] =>              [8] =>              [9] =>              [10] =>              [11] =>              [12] =>              [13] =>          ) 

To remove these empty rows

$data = array_map('array_filter', $data); 

will return

[1] => Array ( )

And this is the finale solution:

        $maxCell = $objWorksheet->getHighestRowAndColumn();         $data = $objWorksheet->rangeToArray('A1:' . $maxCell['column'] . $maxCell['row']);         $data = array_map('array_filter', $data);         $data = array_filter($data); 

will return an array with only filled rows .. hope that help

回答3:

No there isn't. The toArray() method returns the first argument (NULL) to represent an empty cell. You can then apply standard PHP array functions such as array_filter() to eliminate empty cells.

foreach($data as $key => &$row) {     $row = array_filter($row,                         function($cell) {                             return !is_null($cell);                         }            );     if (count($row) == 0) {         unset($data[$key]);     } } unset ($row); 

This will eliminate every cell that is a NULL (empty) value, and every row that comprises nothing but empty cells. It will preserve the array keys, so your array keys will still give you a cell reference.

Note that an cell containing an empty string is not a null cell, so these will be retained, although the array_filter() callback could be modified to remove them as well.

文章来源: Ignore empty cells PHPExcel