PHP check if image file exists

File_exists does something weird, it does not say if a file exists, it says if path exists. So, to check if it is a file then you should use is_file together with file_exists to know if there is really a file behind the path, otherwise file_exists will return true for any existing path.
Example:

if((is_file($filePath))&&(file_exists($filePath))){
      return true;
}   
else{
      return false;
}

By Keenlio, September 12, 2014