我在下面有這段代碼，如果我想控制數(shù)字之間的間距，我該怎么做。1 0 , 5 6 5 , 6 6 0 。8 8（當前 1 個空格） - 這是當前輸出，我希望每個數(shù)字之間有更多空格，可能是 3 個或更多空格。先感謝您。 <?php session_start() ; ?> <?php require "../db_connection304.php" ; ?> <?php require_once('../../bus_partners/fpdf/fpdf/fpdf.php'); require_once('../../bus_partners/fpdf/fpdi/fpdi.php'); $pdf = new FPDI(); if (isset($_POST["submit"])) {         $payroll_month  = mysqli_real_escape_string($connection304, $_POST['payroll_month']);             }         $year  =  preg_split("/[-_ ]+/", $payroll_month) ;         $year  =  $year[1] ;         $payrolldate1      = str_replace('_','', $payroll_month) ;         $payroll_date2     = date_create_from_format("FjY","$payrolldate1") ;         $monthly_statutory = date_format($payroll_date2,"m") ; $query             = "SELECT SUM( GROSS_PAY ) AS gross_pay FROM ".$_SESSION['$company_code']."_".$year." WHERE MONTH(PAYROLL_PERIOD) = '{$monthly_statutory}' "; $result_gross_pay    = mysqli_query($connection304,$query) ;  while($row_gross_pay = mysqli_fetch_array($result_gross_pay))  {          $gross_pay    = $row_gross_pay['gross_pay'] ;             }$gross_pay              =  number_format($gross_pay,2 ) ;$gross_pay_withspace    =  chunk_split($gross_pay,1,' ') ;