我试图获取他们以user_id.jpg格式或gif或png格式的个人资料图片的mime类型,我尝试使用此代码,但它无法正常工作。
function detectFileMimeType($filename='')
{
$filename = escapeshellcmd($filename);
$command = "file -b --mime-type -m /usr/share/misc/magic {$filename}";
$mimeType = shell_exec($command);
return trim($mimeType);
}
function get_avatar($image, $user_id, $account)
{
$imgurl ="http://mypage/files/pictures/picture-" . ($user_id, $mimeType) . ".jpg";
if (!is_imgurl_good($imgurl)) {
$imgurl = "http://mypage/sites/all/themes/simple_custom/user.png";
}
return $imgurl;
}
答案 0 :(得分:0)
您应该可以使用PHP提供的内置函数轻松获取文件的MIME类型 -
class FooFighter { public: virtual void foo() = 0; };
class A { ... };
class B1 : public A { ... };
class B2 : public A, public FooFighter { ... };
...
int main() {
std::vector<A *> v;
// fill up v
for (int i = 0; i < v.size(); ++i) {
FooFighter * ff = dynamic_cast<FooFighter *>(v[i]);
if (ff) ff.foo();
}
return 0;
答案 1 :(得分:0)
除了工作正常的getimagesize
之外,稍微简单的方法是返回PHP $file = "blah/blahblah/bubbles.jpg";
$fileTypeData = getimagesize($file);
$fileTypeData['mime'] = The Mime type of the image file.
函数,因为这将返回从文件中提取的MIME类型:
Bundle bundle = new Bundle();
bundle.putString("someString", stringValue);
fragment.putArguments(bundle);