Call to undefined function think\finfo_open()

1. linux服务器环境搭建的时候，fileinfo扩展从php5.3之后默认是开启的，可能是为了方便没有编译安装；
2. 首先找到fileinfo目录；

   [root@izm5eb1zq3z60zvnqzti7yz ~]# find / -name fileinfo
   /usr/local/php/ext/fileinfo
   

    

3.  进入此目录，执行 /usr/local/php/bin/phpize 会产生 configure文件

   [root@izm5eb1zq3z60zvnqzti7yz bin]# cd /usr/local/php/ext/fileinfo
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# ls
   config.m4   create_data_file.php  data_file.c   fileinfo.c    libmagic        magicdata.patch  package.xml     tests
   config.w32  CREDITS               EXPERIMENTAL  fileinfo.php  libmagic.patch  Makefile.frag    php_fileinfo.h
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# /usr/local/php/bin/phpize
   Configuring for:
   PHP Api Version:         20170718
   Zend Module Api No:      20170718
   Zend Extension Api No:   320170718
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# ls
   acinclude.m4    config.h.in   config.w32            fileinfo.c      ltmain.sh        mkinstalldirs
   aclocal.m4      config.m4     create_data_file.php  fileinfo.php    magicdata.patch  package.xml
   autom4te.cache  config.sub    CREDITS               install-sh      Makefile.frag    php_fileinfo.h
   build           configure     data_file.c           libmagic        Makefile.global  run-tests.php
   config.guess    configure.ac  EXPERIMENTAL          libmagic.patch  missing          tests

    

4.  ./configure --with-php-config=/usr/local/php/bin/php-config 【/usr/local/php/bin/ 是你自己的php目录】

   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# ./configure --with-php-config=/usr/local/php/bin/php-config

    

5. 编译安装 ，如果出现【virtual memory exhausted: Cannot allocate memory】，查看https://blog.csdn.net/qq_34272964/article/details/82797587

   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# make && make install

    

6.  修改php.ini文件，添加extension=fileinfo.so

   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# find  / -name php.ini
   /usr/local/php/etc/php.ini
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# vim /usr/local/php/etc/php.ini
   

    

7. 重启nginx服务器和php-fpm

   [root@izm5eb1zq3z60zvnqzti7yz sbin]# /usr/local/nginx/sbin/nginx -s stop
   [root@izm5eb1zq3z60zvnqzti7yz sbin]# /usr/local/nginx/sbin/nginx
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# systemctl stop  php-fpm
   [root@izm5eb1zq3z60zvnqzti7yz fileinfo]# systemctl start php-fpm