Question

我收到以下错误注意：未定义的索引：include（）中的HTTP_USER_AGENT但是我没有定义HTTP_USER_AGENT

function get_browser_name($user_agent)
{
    if (strpos($user_agent, 'Opera') || strpos($user_agent, 'OPR/')) return 'Opera';
    elseif (strpos($user_agent, 'Edge')) return 'Edge';
    elseif (strpos($user_agent, 'Chrome')) return 'Chrome';
    elseif (strpos($user_agent, 'Safari')) return 'Safari';
    elseif (strpos($user_agent, 'Firefox')) return 'Firefox';
    elseif (strpos($user_agent, 'MSIE') || strpos($user_agent, 'Trident/7')) return 'Explorer';
    return 'Other';
}

错误在这一行：

<body class="<?php echo get_browser_name($_SERVER['HTTP_USER_AGENT']);?>" <?php print $attributes;?> <?php print $classes; ?>>

Answer 1

http://php.net/manual/en/function.get-browser.php#101125

引用

function get_browser_name($user_agent)
{
    if (strpos($user_agent, 'Opera') || strpos($user_agent, 'OPR/')) return 'Opera';
    elseif (strpos($user_agent, 'Edge')) return 'Edge';
    elseif (strpos($user_agent, 'Chrome')) return 'Chrome';
    elseif (strpos($user_agent, 'Safari')) return 'Safari';
    elseif (strpos($user_agent, 'Firefox')) return 'Firefox';
    elseif (strpos($user_agent, 'MSIE') || strpos($user_agent, 'Trident/7')) return 'Internet Explorer';

    return 'Other';
}

// Usage:

echo get_browser_name($_SERVER['HTTP_USER_AGENT']);

包含

1 个答案: