file - CSV manipulation using php -

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hey learning php , manipulating csv files here. i'm creating random key generator courses. adding new column keys course.

i have managed this. when run script row being read , key generated that. example if have 3 courses a,b,c 4 keys generated , added csv.

can have or tips on reading , writing csv?

<?php $file= fopen("input.csv","r"); $output=fopen("output.csv","w"); function gen_keys($length=10) {     $characters = '0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz';     $characterslength = strlen($characters);     $randomstring = '';     ($i = 0; $i < $length; $i++) {         $randomstring .= $characters[rand(0, $characterslength - 1)];     }     return $randomstring; }  //echo gen_keys(); $list=array(); while(!feof($file)) {      //print_r(fgetcsv($file));     $list=fgetcsv($file);     //$list=array_filter($list);     $list[]=gen_keys();     echo "<br />";     print_r($list);     fputcsv($output, $list);     //print_r(fgetcsv($output));  } fclose($file); fclose($output);?>

input : comp1400

comp2000

info2425

eng1234

here updated , working version:

$list=fgetcsv($file); if (!empty($list)) {     //$list=array_filter($list);     $list[]=gen_keys();     echo "<br />";     print_r($list);     fputcsv($output, $list); }

please note line if (!empty($list)) { checks if have imput.

more information empty() in documentation.


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