????php7???????????????????????
$chars = ord($str{$i});
$upsizeHDR += strlen('Content-Disposition: form-data; name="' . $header . '"' . "\r\n\r\n" . (get_magic_quotes_gpc() ? stripslashes($value) : $value) . "\r\n");
??get_magic_quotes_gpc() ??????????????
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