Question

I am trying to handle a CSV file via php, and I have it working. But there is this one array that I need to change based on a set of conditions.

$file_handle = fopen($path, "r");
while (!feof($file_handle) ) {
    $line_of_text = fgetcsv($file_handle, 100000);
    if($currency == "US"){
        $line_of_text[6] = str_replace ("if_you_find_this","change_to_this",$line_of_text[6]);
        $line_of_text[6] = str_replace ("if_you_find_this","change_to_this",$line_of_text[6]);
    } elseif($currency == "DE"){
        $line_of_text[6] = str_replace ("if_you_find_this","change_to_this",$line_of_text[6]);
        $line_of_text[6] = str_replace ("if_you_find_this","change_to_this",$line_of_text[6]);
}else {
        echo "Something with currency handling went wrong. Please contact support.";
}
    $data .=  $line_of_text[0] . "," . $line_of_text[1] . "," . $line_of_text[2] . "," . $line_of_text[4] . "," . $line_of_text[6] . "," .  $line_of_text[49] . "," .  $line_of_text[51] . "\n";

}
fclose($file_handle);

$new_file_handle = fopen($path, "w");
fwrite($new_file_handle, $data);

It’s not throwing any errors, but seems that the whole conditional block is being ignored. Help?

Answer 1

You’re not reading from $file_handle anywhere. feof($file_handle) will never be true. As posted, this code should loop forever.

(BTW, using feof like this is generally not how you want to do it, for this reason among others. Better would be something like while (($line = however_you_read($file_handle)) !== FALSE).) Pretty much all the stream-reading functions return FALSE on any error, or on EOF.)