安装pecl
参考：https://blog.csdn.net/zerovszero1/article/details/98946925
curl -O http://pear.php.net/go-pear.phar
sudo php -d detect_unicode=0 go-pear.phar
执行以上命令，提示如下错误：
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><html><head><title>301 Moved Permanently</title></head><body><h1>Moved Permanently</h1><p>The document has moved <a href="https://pear.php.net/go-pear.phar">here</a>.</p></body></html> |
更新命令：
1.1下载：curl -O https://pear.php.net/go-pear.phar
1.2安装：sudo php -d detect_unicode=0 go-pear.phar
输入1，回车，配置pear路径为：/usr/local/pear
输入4，回车，配置命令路径为：/usr/local/bin
回车
回车
结束~
1.3查看版本号 pecl -V
如 pecl install 失败
pecl channel-update pecl.php.net 更新其协议，再安装。
pear config-set temp_dir /var/tmp/pear
再安装