Composer self-update appears under Windows 8.1[ErrorException]zlib_decode(): The solution to the data error prompt!
1. Composer self-update appears[ErrorException] zlib_decode(): data error prompt
2. Edit zlib.output_compression in php.ini = on, zlib.output_compression_level = 53. Check the relevant information of zlib in phpinfo as follows:
4. Composer self-update execution is successful
![composer self-update 出现 [ErrorException] zlib_decode(): data error提示](https://www.shuijingwanwq.com/wp-content/uploads/2015/06/14.png)


