如何访问if语句之外的变量

Question

在下面的代码中，我如何在此语句之外访问 $uname？

 $uname = '';
if ($row['ulogo'] == '1'){
    $ulogo = '../images/varsity logos/witsLogo.jpg';
    $uname = 'Wits';
    echo $uname;
    } else if ($row['ulogo'] == '2'){
        $ulogo = '../images/varsity logos/UJ.png';
    $uname = 'University of Johannessburg';
    echo $uname;
    } 
    echo $uname;

如果有人投反对票，请解释一下。

Answer 1

在 if 块之外初始化 $uname：

$uname = '';
if ($row['ulogo'] == '1'){
    $ulogo = '../images/varsity logos/witsLogo.jpg';
    $uname = 'Wits';
    echo $uname;
    } else if ($row['ulogo'] == '2'){
        $ulogo = '../images/varsity logos/UJ.png';
    $uname = 'University of Johannessburg';
    echo $uname;
} 
echo $uname;