Remove line(s) from a CSV file and generate a new file automatically

Question

I am trying to manipulate an existing .csv file with PHP! I looked through most of the StackOverflow questions and I found the answer from user "Myke Black" which fits best for what I need.

I set $id=2 , therefore I expect, that the code affects row 2 from my .csv file and a new generated .csv file without row 2 will be generated.

Here is my code:

$id=2;
$fptemp = fopen('files/FL_insurance_small-temp.csv', "a+");
if (($handle = fopen('files/FL_insurance_small.csv', "r")) !== FALSE) {
    while (($id= fgetcsv($handle)) !== FALSE) {
        if ($id != $data[0]) {
            $list = array($data);
            fputcsv($fptemp, $list);
        }
    }
    fclose($handle);
    fclose($fptemp);

    rename('files/FL_insurance_small-temp.csv','files/output/FL_insurance_small_new.csv');
    echo "Row with ID: ".$id." successfully deleted!";
} else {
    print "There seems to be a problem.";
}

Everything seems to work fine cause a new file inside the output folder is generated. My problem is, that the new generated file is empty. Does anyone have an idea why? What am I missing?

Example data (.csv):

policyID,statecode,county,eq_site_limit,hu_site_limit,fl_site_limit,fr_site_limit,tiv_2011,tiv_2012,eq_site_deductible,hu_site_deductible,fl_site_deductible,fr_site_deductible,point_latitude,point_longitude,line,construction,point_granularity
119736,FL,"CLAY COUNTY",498960,498960,498960,498960,498960,792148.9,0,9979.2,0,0,30.102261,-81.711777,Residential,Masonry,1
448094,FL,"CLAY COUNTY",1322376.3,1322376.3,1322376.3,1322376.3,1322376.3,1438163.57,0,0,0,0,30.063936,-81.707664,Residential,Masonry,3
206893,FL,"CLAY COUNTY",190724.4,190724.4,190724.4,190724.4,190724.4,192476.78,0,0,0,0,30.089579,-81.700455,Residential,Wood,1
333743,FL,"CLAY COUNTY",0,79520.76,0,0,79520.76,86854.48,0,0,0,0,30.063236,-81.707703,Residential,Wood,3
172534,FL,"CLAY COUNTY",0,254281.5,0,254281.5,254281.5,246144.49,0,0,0,0,30.060614,-81.702675,Residential,Wood,1
785275,FL,"CLAY COUNTY",0,515035.62,0,0,515035.62,884419.17,0,0,0,0,30.063236,-81.707703,Residential,Masonry,3
995932,FL,"CLAY COUNTY",0,19260000,0,0,19260000,20610000,0,0,0,0,30.102226,-81.713882,Commercial,"Reinforced Concrete",1
223488,FL,"CLAY COUNTY",328500,328500,328500,328500,328500,348374.25,0,16425,0,0,30.102217,-81.707146,Residential,Wood,1
433512,FL,"CLAY COUNTY",315000,315000,315000,315000,315000,265821.57,0,15750,0,0,30.118774,-81.704613,Residential,Wood,1
142071,FL,"CLAY COUNTY",705600,705600,705600,705600,705600,1010842.56,14112,35280,0,0,30.100628,-81.703751,Residential,Masonry,1
253816,FL,"CLAY COUNTY",831498.3,831498.3,831498.3,831498.3,831498.3,1117791.48,0,0,0,0,30.10216,-81.719444,Residential,Masonry,1
894922,FL,"CLAY COUNTY",0,24059.09,0,0,24059.09,33952.19,0,0,0,0,30.095957,-81.695099,Residential,Wood,1
422834,FL,"CLAY COUNTY",0,48115.94,0,0,48115.94,66755.39,0,0,0,0,30.100073,-81.739822,Residential,Wood,1
582721,FL,"CLAY COUNTY",0,28869.12,0,0,28869.12,42826.99,0,0,0,0,30.09248,-81.725167,Residential,Wood,1

Answer 1

When reading the file - your overwriting $id which is the row your looking for. Instead your loop should assign the value to $data instead...

$rowcount = 1;
while ($data= fgetcsv($handle)) {
    if ($id != $rowcount++) {
        fputcsv($fptemp, $data);
    }
}

$rowCount is the row that is currently being read and so this is compared against each row as it reads the new line in.

This also removes the redundant assignment to $list .

To 'delete'(or ommit) a list of records...

$id= [2,5,7];
$rowcount = 1;
while ($data= fgetcsv($handle)) {
    if (!in_array($rowcount++, $id)) {   // Only write row if not in the list
        fputcsv($fptemp, $data);
    }
}