Question

 $query = mysqli_query($con,"select * from s_users
        where
        s_id = '".$_GET['s_id']."'");   
    $row = mysqli_fetch_array($query);
    if ($row['status'] == 1) { //1 
    $pdf = new PDF_Code128('P','mm','A4');
    $pdf->AddPage();
    $pdf->Cell(190  ,220,'',1,0);
     $pdf->image('images/logo.png', 14, 16, -200);
    $pdf->image($row['imgdata'], 163, 16, -210);
    $pdf->SetFont('Arial','B',14);
    } else {
    $pdf->image('images/profiledefault.jpg', 163, 16, -210);
    }

这是我使用FPDF显示个人资料图片的代码，我希望在没有个人资料图片时显示默认图片。我正在使用IFELSE语句，但我在else中得到未定义的变量pdf 声明

Answer 1

您的问题在于if语句。如果status=1，那么您要定义$pdf。如果情况并非如此，则不要这样做。

你应该沿着这些方向重新编写代码......

$query = mysqli_query($con,"select * from s_users where s_id = '".$_GET['s_id']."'");   
$row = mysqli_fetch_array($query);

$pdf = new PDF_Code128('P','mm','A4');
$pdf->AddPage();
$pdf->Cell(190  ,220,'',1,0);

if ($row['status'] == 1) { //1 
    $pdf->image('images/logo.png', 14, 16, -200);
    $pdf->image($row['imgdata'], 163, 16, -210);
} else {
    $pdf->image('images/profiledefault.jpg', 163, 16, -210);
}

$pdf->SetFont('Arial','B',14);

未定义的变量：FPDF中的pdf

1 个答案: