In 2013, I wrote about the process of installing the PHP extension IMAP in Junge's LNMP environment. At that time, it was LNMP1.0. Today, when I install it on a machine, it is slightly different. The VPS system is centos6.9 64bit. The environment It’s Jun Ge’s LNMP1.4, so I’ll update it. 
 1. Install the required libraries 
 [[email protected]]#yum install libc-client-devel
 2. Enter the installation directory to decompress PHP 
 [[email protected]]#cd /root/lnmp1.4/src
 [[email protected]]#tar -xjvf php-5.6.31 .tar.bz2
 #Pay attention to the PHP version you installed, and decompress the response compressed package 
 3. Install IMAP
 [[email protected] ]#cd /root/lnmp1.4/src/php-5.6.31/ext/imap
 [[email protected]]#/usr/local/php/bin/phpize
Configuring for:
 PHP Api Version:         20131106
 Zend Module Api No:  < x2>   20131226
 Zend Extension Api No:   220131226
[[email protected]]# ./configure --with-php-config=/usr/local/php/bin/php-config --with-kerberos --with-imap- ssl --with-libdir=lib64
 [[email protected]]# make && make install
Build complete.
 Don""t forget to run ""make test"".
 Installing shared extensions:     /usr/local/php/lib/php/ extensions/no-debug-non-zts-20131226/
  
 4. Modify php.ini and restart 
 [[email protected]]#vi / usr/local/php/etc/php.ini
 Find: extension_dir and add extension = "imap.so"
 [[email protected]]#/etc /init.d/php-fpm restart
 Finally, we check the component support through the probe: 
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