mac下面用pecl安装redis模块的时候，提示失败：
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$ sudo pecl install redis Package "redis" does not have REST info xml available install failed |
尝试搜索一下：
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$ pecl search redis File http://pecl.php.net:80/rest/p/packages.xml not valid (redirected but no location) |
这个错误看起来很奇怪，怎么回事呢？以前都好好的，怪事。网上搜索了一下，找到如下一段话：
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If anyone else has a similar problem, it is solved now, it‘s the firewall. For any reason, I can download files from the browser, and I can install or update packages by APT, but firewall is blocking PEAR downloads. I have added PEAR URL‘s to secured sites and now it‘s working. |
看到firewall is blocking PEAR downloads，就猜到估计是某墙的问题，打开VPN再试一下就OK了。
不过感觉pecl的出错提示也太奇怪了，都看不太明白。
