8 月 1 日 PHP 释出了 7.3.8 稳定版本。昨天折腾好了 Nginx 今天就来升级 PHP 吧！其实是昨天弄了好久都没成功今天才成功了
备份当前 PHP 为了避免翻车，先对当前的 PHP 安装目录进行备份：
root@castle:~ /usr/local/php/bin/php cp -r /usr/local/php /usr/local/php_backup
获取当前 PHP 编译参数 为了避免新装的 PHP 缺少已经在使用的功能造成错误，需要使用以前编译的相同参数（当然也可以加上新的参数）进行全新编译。
我的 PHP 是 Oneinstack 一键包安装的，输出的参数如下：
phpinfo()
System => Linux castle 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64
由于输出的编译参数是带 ‘’ 的，复制到代码编辑器里把 ‘ 替换掉就可以了。
仔细阅读编译参数，看是否有需要外部库的部分，确认各种 DIR 参数是否有相应目录，例如
ls /usr/local/opensslbin cert.pem certs include lib man misc openssl.cnf private
下载 PHP 源码 新建临时文件夹，在 https://www.php.net/downloads.php 页面下载 PHP 的最新 Stable 版本，解压缩，进入源码目录。
cd ~ && mkdir php_temp && cd php_tempwget https://www.php.net/distributions/php-7.3.8.tar.gz tar -xzf php-7.3.8.tar.gz cd php-7.3.8
开始编译 确认编译参数无误以后开始编译。
./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-config-file-scan-dir=/usr/local/php/etc/php.d --with-fpm-user=www --with-fpm-group=www --enable-fpm --disable-opcache --disable-fileinfo --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir=/usr/local --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-exif --enable-sysvsem --enable-inline-optimization --with-curl=/usr/local/curl --enable-mbregex --enable-mbstring --with-password-argon2 --with-sodium=/usr/local --with-gd --with-openssl=/usr/local/openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-ftp --enable-intl --with-xsl --with-gettext --enable-zip --without-libzip --enable-soap --disable-debug
如果没有出错，大概可以看到这样的输出：
Generating files configure: creating ./config.status creating main/internal_functions.c creating main/internal_functions_cli.c +--------------------------------------------------------------------+ | License: | | This software is subject to the PHP License, available in this | | distribution in the file LICENSE. By continuing this installation | | process, you are bound by the terms of this license agreement. | | If you do not agree with the terms of this license, you must abort | | the installation process at this point. | +--------------------------------------------------------------------+ Thank you for using PHP. config.status: creating php7.spec config.status: creating main/build-defs.h config.status: creating scripts/phpize config.status: creating scripts/man1/phpize.1 config.status: creating scripts/php-config config.status: creating scripts/man1/php-config.1 config.status: creating sapi/cli/php.1 config.status: creating sapi/fpm/php-fpm.conf config.status: creating sapi/fpm/www.conf config.status: creating sapi/fpm/init.d.php-fpm config.status: creating sapi/fpm/php-fpm.service config.status: creating sapi/fpm/php-fpm.8 config.status: creating sapi/fpm/status.html config.status: creating sapi/phpdbg/phpdbg.1 config.status: creating sapi/cgi/php-cgi.1 config.status: creating ext/phar/phar.1 config.status: creating ext/phar/phar.phar.1 config.status: creating main/php_config.h config.status: executing default commands
此时可以先执行 make 命令；但是这一步在我的机器上有出错，错误如下：
ext/xmlrpc/libxmlrpc/encodings.o: In function & /root/php_temp/php-7.3.8/ext/xmlrpc/libxmlrpc/encodings.c:65: undefined reference to & /root/php_temp/php-7.3.8/ext/xmlrpc/libxmlrpc/encodings.c:72: undefined reference to & /root/php_temp/php-7.3.8/ext/xmlrpc/libxmlrpc/encodings.c:88: undefined reference to & /root/php_temp/php-7.3.8/ext/xmlrpc/libxmlrpc/encodings.c:88: undefined reference to & collect2: error: ld returned 1 exit status Makefile:293: recipe for target & make: *** [sapi/cli/php] Error 1
搜索以后，根据 https://fukun.org/archives/10102487.html 里的命令解决了问题：
make ZEND_EXTRA_LIBS=’-liconv’
make 就成功了：
Build complete.
最后执行 make install 即可完成编译：
root@castle:~/php_temp/php-7.3.8 Installing PHP CLI binary: /usr/local/php/bin/ Installing PHP CLI man page: /usr/local/php/php/man/man1/ Installing PHP FPM binary: /usr/local/php/sbin/ Installing PHP FPM defconfig: skipping Installing PHP FPM man page: /usr/local/php/php/man/man8/ Installing PHP FPM status page: /usr/local/php/php/php/fpm/ Installing phpdbg binary: /usr/local/php/bin/ Installing phpdbg man page: /usr/local/php/php/man/man1/ Installing PHP CGI binary: /usr/local/php/bin/ Installing PHP CGI man page: /usr/local/php/php/man/man1/ Installing build environment: /usr/local/php/lib/php/build/ Installing header files: /usr/local/php/include/php/ Installing helper programs: /usr/local/php/bin/ program: phpize program: php-config Installing man pages: /usr/local/php/php/man/man1/ page: phpize.1 page: php-config.1 Installing PEAR environment: /usr/local/php/lib/php/ [PEAR] Archive_Tar - already installed: 1.4.7 [PEAR] Console_Getopt - already installed: 1.4.2 [PEAR] Structures_Graph- already installed: 1.1.1 [PEAR] XML_Util - already installed: 1.4.3 [PEAR] PEAR - already installed: 1.10.9 Wrote PEAR system config file at: /usr/local/php/etc/pear.conf You may want to add: /usr/local/php/lib/php to your php.ini include_path /root/php_temp/php-7.3.8/build/shtool install -c ext/phar/phar.phar /usr/local/php/bin ln -s -f phar.phar /usr/local/php/bin/pharInstalling PDO headers: /usr/local/php/include/php/ext/pdo/
使用 php -v 命令查看当前 PHP 版本：
root@castle:~/php_temp/php-7.3.8 PHP 7.3.8 (cli) (built: Aug 10 2019 10:23:35) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.8, Copyright (c) 1998-2018 Zend Technologies
升级成功了；最后重启 PHP 以应用更改。