php - Limit the number of characters on a string with FPDF -

i'm trying display data on pdf document fpdf, problem can't limit number of characters of string , width exceeds, use multicell whant set limit of characters,

i tried solve function custom echo apparently doesn't work fpdf don't know happen.

function custom_echo($x, $length) {     if(strlen($x)<=$length)     {         echo $x;     }     else     {         $y=substr($x,0,$length) . '...';         echo $y;     }  }  $message= "hello world";  $pdf=new fpdf(); $pdf->setleftmargin(0); $pdf->addpage();  $pdf->multicell( 95, 6, utf8_decode(custom_echo($message,5)), 0, 1); // tried $pdf->multicell( 95, 6, custom_echo(utf8_decode($message),5), 0, 1);  $pdf->output(); 

the php echo command sends string output. need return string result of function fpdf can use it.

function custom_echo($x, $length) {    if (strlen($x) <= $length) {       return $x;    } else {       return substr($x,0,$length) . '...';    } } 

which can simplified to:

function custom_echo($x, $length) {    if (strlen($x) <= $length) {       return $x;    }    return substr($x,0,$length) . '...'; } 

and made shorter how it.