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 | spl_autoload_extensionsRegister and return default file extensions for spl_autoload Description
   string spl_autoload_extensions
    ([ string  $file_extensions] )This function can modify and check the file extensions that the built in __autoload fallback function spl_autoload will be using. Parameters
 
 Return ValuesA comma delimited list of default file extensions for spl_autoload. |