一、CentOS 6.7 x64上手动扩展PHP的IMAP模块
1、准备
yum install -y libc-client-devel
ln -s /usr/lib64/libc-client.so /usr/lib/libc-client.so
ln -s /usr/lib64/libkrb5.so /usr/lib/libkrb5.so
ln -s /usr/lib64/libssl.so /usr/lib/libssl.so
2、安装
cd/usr/local/php-5.5.35/ext/imap/
/usr/local/php/bin/phpize
./configure -with-imap -with-php-config=/usr/local/php/bin/php-config --with-kerberos=/usr --with-imap-ssl=/usr
make
make install
3、添加模块
vim /usr/local/php/etc/php.ini //添加
extension = "imap.so"
重启PHP
/etc/init.d/php-fpm restart
再次查看PHP模块，可以发现已经有imap模块了
注意：./configure编译报错
报错1：configure: error:utf8_mime2text() has new signature, but U8T_CANONICAL is missing. This shouldnot happen. Check config.log for additional information
解决：
yum install -y libc-client-devel
ln -s /usr/lib64/libc-client.so /usr/lib/libc-client.so
报错2：configure: error:Kerberos libraries not found. Check thepath given to --with-kerberos (if no path is given, searches in /usr/kerberos,/usr/local and /usr )
解决：ln -s /usr/lib64/libkrb5.so /usr/lib/libkrb5.so
报错3：configure: error:Cannot find OpenSSL's libraries
解决：ln -s /usr/lib64/libssl.so /usr/lib/libssl.so
重新./configure编译即可。
二、CentOS 7.0.1406 x64上手动扩展PHP的IMAP模块
1、安装 php-imap
yum install -y pam-devel
cd /usr/local/src/
wget ftp://ftp.cac.washington.edu/imap/imap-2007f.tar.gz
tar -zxvf imap-2007f.tar.gz
cd imap-2007f
make lr5 PASSWDTYPE=std SSLTYPE=unix.nopwd EXTRACFLAGS=-fPIC IP=4
mkdir /usr/local/imap-2007f/
mkdir /usr/local/imap-2007f/include/
mkdir /usr/local/imap-2007f/lib/
cp c-client/*.h /usr/local/imap-2007f/include/
cp c-client/*.c /usr/local/imap-2007f/lib/
cp c-client/c-client.a /usr/local/imap-2007f/lib/libc-client.a
2、php手动加载php-imap
cd /usr/local/php-7.1.0/ext/imap/
/usr/local/php/bin/phpize
./configure -with-imap=/usr/local/imap-2007f -with-php-config=/usr/local/php/bin/php-config --with-imap-ssl=/usr
make
make install
注意：./configure编译报错
报错：configure: error:Cannot find OpenSSL's libraries
解决：确认已安装过openssl、libssl-dev 包，但是还是会提示该错误
find / -name libssl.so //查找到路径为：/usr/lib64/libssl.so
ln -s /usr/lib64/libssl.so /usr/lib
重新编译即可
3、添加php-imap模块
vim /usr/local/php/etc/php.ini //添加
extension ="imap.so"
重启PHP
/etc/init.d/php-fpm restart
再次查看PHP模块，可以发现已经有imap模块了
