安装pecl和pear命令
学思创
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下载go-pear.phar文件
①第一种：通过wget命令下载
wget http://pear.php.net/go-pear.phar
跳过证书检查
wget https://pear.php.net/go-pear.phar --no-check-certificate
②第二种：通过curl命令下载
curl -fsSLO https://pear.php.net/go-pear.phar
跳过证书检查
curl -fsSLOk https://pear.php.net/go-pear.phar
下载完成，最后执行下面命令进行安装
php go-pear.phar