php 相關模塊備忘

在安裝php的時候，不論是編譯安裝：

./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-mysql=/usr/local/mysql --with-mysqli=/usr/local/mysql/bin/mysql_config --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-discard-path --enable-magic-quotes --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-fpm --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --enable-ftp --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --without-pear --with-gettext --with-mime-magic

仍是yum安裝：

================================================================================
 Package              Arch           Version              Repository       Size
================================================================================
Installing:
 php                  x86_64         5.5.7-1.fc20         updates         2.6 M
Updating:
 php-bcmath           x86_64         5.5.7-1.fc20         updates          62 k
 php-devel            x86_64         5.5.7-1.fc20         updates         2.2 M
 php-gd               x86_64         5.5.7-1.fc20         updates          84 k
 php-imap             x86_64         5.5.7-1.fc20         updates          82 k
 php-ldap             x86_64         5.5.7-1.fc20         updates          61 k
 php-mbstring         x86_64         5.5.7-1.fc20         updates         567 k
 php-mcrypt           x86_64         5.5.7-1.fc20         updates          53 k
 php-pdo              x86_64         5.5.7-1.fc20         updates         137 k
 php-pgsql            x86_64         5.5.7-1.fc20         updates         121 k
 php-process          x86_64         5.5.7-1.fc20         updates          74 k
 php-soap             x86_64         5.5.7-1.fc20         updates         231 k
 php-xml              x86_64         5.5.7-1.fc20         updates         243 k
Updating for dependencies:
 php-cli              x86_64         5.5.7-1.fc20         updates         2.6 M
 php-common           x86_64         5.5.7-1.fc20         updates         1.0 M

安裝的這些模塊都是什麼，幹什麼用的？ 
分別搜索之，備忘以下：

================================================================================
 Package              Arch           Version              Repository       Size
================================================================================
Installing:
 php                  PHP主程序
Updating:
 php-bcmath           高精度數學函數
 php-devel            PHP開發庫
 php-gd               圖形開發庫
 php-imap             internet message access protocol,即網際網絡信息存取協議
 php-ldap             輕量級目錄訪問協議(Lightweight Directory Access Protocol)
 php-mbstring         多字節字符串，好比：中文
 php-mcrypt          加密相關函數庫
 php-pdo              PDO數據庫操做庫
 php-pgsql           PDO數據庫操做庫，pg數據庫
 php-process         進程相關，具體不詳
 php-soap             SOAP 簡單對象訪問協議
 php-xml             XML
 php-cli              php的命令行支持
 php-common

更多待補充：