下载PHP
cd /usr/local/src
wget http://cn2.php.net/distributions/php-7.3.0.tar.bz2
解压
tar jxvf php-7.3.0.tar.bz2
编译
cd php-7.3.0
编译参数：
./configure --prefix=/usr/local/php-fpm --with-config-file-path=/usr/local/php-fpm/etc --enable-fpm --with-fpm-user=php-fpm --with-fpm-group=php-fpm --with-mysql=/usr/local/mysql --with-mysqli=/usr/local/mysql/bin/mysql_config --with-pdo-mysql=/usr/local/mysql --with-mysql-sock=/tmp/mysql.sock --with-libxml-dir --with-gd --with-jpeg-dir --with-png-dir --with-freetype-dir --with-iconv-dir --with-zlib-dir --with-mcrypt --enable-soap --enable-gd-native-ttf --enable-ftp --enable-mbstring --enable-exif --with-pear --with-curl --with-openssl
make
make install
配置文件：
cd /usr/local/php-fpm/
cp php-fpm.conf.default php-fpm.conf
cd /usr/local/src/php-7.3.0
cp php.ini-development /usr/local/php-fpm/etc/php.ini
cd /usr/local/php-fpm/etc/php-fpm.d/
cp www.conf.default www.conf
启动脚本：
cd /usr/local/src/php-7.3.0
cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chkconfig --add php-fpm
chkconfig php-fpm on
chmod 755 /etc/init.d/php-fpm
补充：
vi 里面在一般模式下，按dd可以删除行（剪切），5dd（剪切5行），光标挪到要粘贴的位置，按p。
操作错误之后，想要撤销，可以按u，反着撤销按 ctrl r;
一般模式下按gg可以把光标定位到首行，按G可以定位到末行;
按yy复制,5yy复制5行;
显示行号，在一般模式里输入:set nu;
定位到指定的行：一般模式下直接按数字G，如10G
编译安装一个软件包的步骤：
./configure ; make; make install
grep -i 忽略大小写
错误1：
checking for cc... no
checking for gcc... no
解决： yum install -y gcc
错误2：
error: libxml2 not found
解决：yum install -y libxml2-devel
错误3：
error: Cannot find OpenSSL's
解决：yum install -y openssl-devel
错误4：
error: cURL version 7.15.5 or later is required
解决：yum install -y libcurl-devel
错误5：
configure: error: jpeglib.h not found
解决：yum install -y libjpeg-turbo-devel
错误6：
configure: error: png.h not found
解决：yum install -y libpng-devel
错误7：
configure: error: freetype-config not found.
解决： yum install -y freetype-devel
错误8：
configure: error: wrong mysql library version or lib not found
解决：下载一个低版本的MySQL/Mariadb
wget http://mirrors.163.com/mysql/Downloads/MySQL-5.6/mysql-5.6.39-linux-glibc2.12-x86_64.tar.gz
tar jxvf mysql-5.6.39-linux-glibc2.12-x86_64.tar.gz
mv mysql-5.6.39-linux-glibc2.12-x86_64 /usr/local/mysql5.6
改编译参数
./configure --prefix=/usr/local/php-fpm --with-config-file-path=/usr/local/php-fpm/etc --enable-fpm --with-fpm-user=php-fpm --with-fpm-group=php-fpm --with-mysql=/usr/local/mysql5.6 --with-mysqli=/usr/local/mysql5.6/bin/mysql_config --with-pdo-mysql=/usr/local/mysql5.6 --with-mysql-sock=/tmp/mysql.sock --with-libxml-dir --with-gd --with-jpeg-dir --with-png-dir --with-freetype-dir --with-iconv-dir --with-zlib-dir --with-mcrypt --enable-soap --enable-gd-native-ttf --enable-ftp --enable-mbstring --enable-exif --with-pear --with-curl --with-openssl
错误9：
ERROR: [pool www] cannot get uid for user 'php-fpm'
解决：useradd php-fpm
补充：
diff 查看两个文件的差异的，如 diff 1.txt 2.txt