PHP get (remote) large file method record

Usually PHP Error getting file , Will use file_get_contents(). But when getting large files , May report such a mistake ：

Allowed memory size of 134217728 bytes exhausted (tried to allocate 49422336 bytes)

This is because file_get_contents() Error getting file , Will put the contents of the file into a string , When the string size exceeds php.ini In the setting of memory_limit When parameters are , It's a mistake . The solution is to change the parameter a little larger , It's usually 128M, It can be modified a little larger . But you need to restart the server after the modification , It's troublesome . You can also change this value dynamically , Use  ini_set.  I use the following method to solve ：

        $handle = fopen(" Remote file address ", "rb");
        $fp = fopen('vv.mp4', 'w');// Open a file ,
        while (!feof($handle)) { // Cycle through remote files 
            $contents = '';
            $contents = fread($handle, 1048576);// Each read 1M
            fwrite($fp, $contents);// Writes the contents of a remote file to an open vv.mp4 file 
        }
        fclose($handle);
        fclose($fp);

In this way, even the largest file can be read , It's just that there are more cycles , Take longer .