file_exist函数不起作用

Question

I have a function that checks if the mobile image exists and if does then it will return true. No matter what I do I can't get this function to work properly.

public function mobileImageExist($image)
{
    $file = "images/$image";
    if(file_exists($file))
        return true;

    return false;
}

I have also tried

public function mobileImageExist($image)
{
    $file = dirname(__FILE__)."/images/$image";
    if(file_exists($file))
        return true;

    return false;
}

the $image parameter that is being passed to the function is just the image name. ex: banner_mobile.jpg

Answer 1

Got it working. It ended up being another function that was referencing the mobileImageExist function and causing it to somehow return true whether or not the file existed or not