在此FileExchange提交中：isfunction()，您可以使用以下组合来确定它是否是一个函数：

% nargin gives the number of arguments which a function accepts, errors if not a func
nargin( ___ ); 
% If nargin didn't error, it could be a function file or function handle, so check
isa( ___, 'function_handle' );

更广泛地说，Jos为isfunction增加了多个输出：

function ID = local_isfunction(FUNNAME)
try    
    nargin(FUNNAME) ; % nargin errors when FUNNAME is not a function
    ID = 1  + isa(FUNNAME, 'function_handle') ; % 1 for m-file, 2 for handle
catch ME
    % catch the error of nargin
    switch (ME.identifier)        
        case 'MATLAB:nargin:isScript'
            ID = -1 ; % script
        case 'MATLAB:narginout:notValidMfile'
            ID = -2 ; % probably another type of file, or it does not exist
        case 'MATLAB:narginout:functionDoesnotExist'
            ID = -3 ; % probably a handle, but not to a function
        case 'MATLAB:narginout:BadInput'
            ID = -4 ; % probably a variable or an array
        otherwise
            ID = 0 ; % unknown cause for error
    end
end

您可以使用以下代码来检查文件是函数还是脚本。

file_fullpath = ['path_to_file', filesep, 'my_file.m'];

t = mtree(file_fullpath ,'-file');
x = t.FileType

if(x.isequal("FunctionFile"))
    disp("It is a function!");
end
if(x.isequal("ScriptFile"))
    disp("It is a script!");
end