php-excel-reader - problem with UTF-8

Question

I'm using php-excel-reader 2.21 for converting XLS file to CSV. I wrote a simple script to do that, but I have some problems with unicode characters. It does not return values from some cells.

For example it doesn't have problems with cell content ceník položek but have problems with nákup , VÝROBCE , PÁS , HRUBÝ , NÁKLADNÍ and some others. In these cells it returns empty value ( "" ).

Here is the code snippet I use for conversion:

<?php    
set_time_limit(120);    
require_once 'excel_reader2.php';    
$data = new Spreadsheet_Excel_Reader("cenik.xls", false, 'UTF-8');    

$f = fopen('file.csv', 'w');    
for($row = 1; $row <= $data->rowcount(); $row++)    
{    
    $out = '';    
    for($col = 1; $col <= $data->colcount(); $col++)    
    {    
        $val = $data->val($row,$col);

        // escape " and \ characters inside the cell    
        $escaped = preg_replace(array('#”#u', '#\\\\#u', '#[”"]#u'), array('"', '\\\\\\\\', '\"'), $val);    
        if(empty($val))    
            $out .= ',';    
        else    
            $out .= '"' . $escaped . '",';    
    }
    // remove last comma (,)    
    fwrite($f, substr($out, 0, -1));    
    fwrite($f, "\n");
}
fclose($f);

?>

Note that the cell and row indexes starts from 1. Any suggestions?

Answer 1

I hope it's the same problem as I had: In excel_reader2.php on line 1120, replace

$retstr = ($asciiEncoding) ? $retstr : $this->_encodeUTF16($retstr);

with

$retstr = ($asciiEncoding) ? iconv('cp1250', 'utf-8', $retstr) : $this->_encodeUTF16($retstr);

That should fix it, however I suggest you use a different excel reader, such as PHPExcel to avoid problems like these.
Note that you need iconv extension enabled on the server.

Answer 2

I has the answer for this problem, use php_excel_reader like common! Add a function to Spreadsheet_Excel_Reader class:

function seems_utf8($str) {
        for ($i=0; $i<strlen($str); $i++) {
            if (ord($str[$i]) < 0x80) continue; # 0bbbbbbb
            elseif ((ord($str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
            elseif ((ord($str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
            elseif ((ord($str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
            elseif ((ord($str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
            elseif ((ord($str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
            else return false; # Does not match any model
            for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
                if ((++$i == strlen($str)) || ((ord($str[$i]) & 0xC0) != 0x80))
                    return false;
            }
        }
        return true;
    }

And add below line 1120: $retstr = $this->seems_utf8($retstr)?$retstr:utf8_encode($retstr);

Finish!

You can use file php_excel_reader, that i modify! Download here : File excel_reader2.php Use like common with Original-excel-reader