将数组转换为csv时出现php- extra逗号

Question

I have an array which looks somewhat like this

$cars = array
  (
  array("Name","Price","Hours"),
  array("AMW",15,13),
  array("Saab",5,2),
  array("Cand Rover",17,15)
  );

And I'm trying to convert this array to CSV data so that I can write it into a file.

I have a function which takes an array as input and converts it into CSV format. It looks like this:

function array_2_csv($array) 
{
     $csv = array();
     foreach ($array as $item) 
     {
         if (is_array($item)) 
         {
             $csv[] = array_2_csv($item);
             $csv[]="
";
         } 
         else 
         {
             $csv[] = $item;
         }
     }
     return implode(',', $csv);
}

It works but an extra comma appears on front of lines. How can I remove that?

Expected Output

Name,Price,Hours
AMW,15,13,
Saab,5,2,
Cand Rover,17,15

Output I'm getting is:

Name,Price,Hours,
,AMW,15,13,
,Saab,5,2,
,Cand Rover,17,15,

Full Code

$cars = array
  (
  array("Name","Price","Hours"),
  array("AMW",15,13),
  array("Saab",5,2),
  array("Cand Rover",17,15)
  );
$csv_data = array_2_csv($cars);

echo $csv_data;
function array_2_csv($array) 
{
     $csv = array();
     foreach ($array as $item) 
     {
         if (is_array($item)) 
         {
             $csv[] = array_2_csv($item);
             $csv[]="
";
         } 
         else 
         {
             $csv[] = $item;
         }
     }
     return implode(',', $csv);
}

Answer 1

Do like below (your code modification):-

$csv_data = array_2_csv($cars);

echo $csv_data;
function array_2_csv($array) 
{
     $csv = ''; //take string
     foreach ($array as $item) 
     {
         if (is_array($item)) 
         {
             $csv .= implode(',',$item); // implode and add to string
             $csv .="
"; // add new line
         }else{
           $csv .= $item; // direct add value to string
           $csv .="
"; //add new line
         } 

     }
     return $csv; //return string
}

Output:-https://eval.in/752820