安装时始终不成功。

进入控制台进行安装

/www/server/php/71# pecl install mongodb
WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update
pecl/mongodb requires PHP (version >= 7.2.0, version <= 8.99.99), installed version is 7.1.33
No valid packages found
install failed

安装72版本再安装 

/www/server/php/72# pecl install mongodb
WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update

Warning: popen() has been disabled for security reasons in OS/Guess.php on line 254
PHP Warning:  popen() has been disabled for security reasons in /www/server/php/72/lib/php/OS/Guess.php on line 254

Warning: popen() has been disabled for security reasons in /www/server/php/72/lib/php/OS/Guess.php on line 254

Warning: fgets() expects parameter 1 to be resource, null given in OS/Guess.php on line 255
PHP Warning:  fgets() expects parameter 1 to be resource, null given in /www/server/php/72/lib/php/OS/Guess.php on line 255

Warning: fgets() expects parameter 1 to be resource, null given in /www/server/php/72/lib/php/OS/Guess.php on line 255

Warning: pclose() expects parameter 1 to be resource, null given in OS/Guess.php on line 264
PHP Warning:  pclose() expects parameter 1 to be resource, null given in /www/server/php/72/lib/php/OS/Guess.php on line 264

Warning: pclose() expects parameter 1 to be resource, null given in /www/server/php/72/lib/php/OS/Guess.php on line 264
downloading mongodb-1.16.2.tgz ...
Starting to download mongodb-1.16.2.tgz (1,907,341 bytes)
........................................................................................................................................................................................................................................................................................................................................................................................done: 1,907,341 bytes
831 source files, building

Warning: putenv() has been disabled for security reasons in PEAR/Builder.php on line 367
PHP Warning:  putenv() has been disabled for security reasons in /www/server/php/72/lib/php/PEAR/Builder.php on line 367

Warning: putenv() has been disabled for security reasons in /www/server/php/72/lib/php/PEAR/Builder.php on line 367
running: phpize

Warning: popen() has been disabled for security reasons in PEAR/Builder.php on line 525
PHP Warning:  popen() has been disabled for security reasons in /www/server/php/72/lib/php/PEAR/Builder.php on line 525

Warning: popen() has been disabled for security reasons in /www/server/php/72/lib/php/PEAR/Builder.php on line 525
ERROR: failed to run `phpize'

我找到了解决方案：它对我有用。

百度一下，说是在php.ini里将popen函数禁用了
　　于是到宝塔界面修改取消禁止popen函数。

checking target system type... x86_64-pc-linux-gnu
configure: error: Cannot find php-config. Please use --with-php-config=PATH
ERROR: `/tmp/pear/temp/mongodb/configure' failed

依然报错

执行以下命令ubuntu系统下的，以为centos不行，换成了ubuntu系统

apt-get install php-pear php-dev libssl-dev pkg-config

再执行命令

pecl install mongodb

成功

Build process completed successfully
Installing '/usr/lib/php/20170718/mongodb.so'
install ok: channel://pecl.php.net/mongodb-1.16.2
Extension mongodb enabled in php.ini

配置php.ini

默认的不行，它加了引号，删除默认添加的改为以下命令，php最少到7.2

正确应该是

extension=/usr/lib/php/20170718/mongodb.so