逗號需要從最後一個循環中刪除

Question

我的while循環有問題，每個項目都需要有一個逗號，但最後一個不需要一個，但我不知道我需要做什麼...

 while($row = $result->fetch_assoc()) { 
     echo " 
     { 
      id: " . $row['id'] . ", 
      dexNr: " . $row['mon_id'] . ", 
      name: '" . $row['mon_id'] . "', 
      expiration: " . $row['expire_timestamp'] . ", 
      lat: " . $row['lat'] . ", 
      lng: " . $row['lon'] . " 
     }, 
     "; 
    } 

Answer 1

您可以將每個項目推入一個數組，然後用逗號分解它。然後這隻會在項目之間加逗號，但不會在結尾：

$output = array(); 

while($row = $result->fetch_assoc()) { 
    array_push($output, " 
     { 
     id: " . $row['id'] . ", 
     dexNr: " . $row['mon_id'] . ", 
     name: '" . $row['mon_id'] . "', 
     expiration: " . $row['expire_timestamp'] . ", 
     lat: " . $row['lat'] . ", 
     lng: " . $row['lon'] . " 
     } 
    "); 
} 

$output = implode(",", $output);