CentOs 自帶 PHP 之坑

在虛擬機上安裝了CentOs6.5在上面安裝了lnmp開發集成包（php7.1），對於以前沒有任何開發經驗的我來講，正常且安詳滴在集成環境上開發着優雅的小bug.

然而我今天在Composer拉取代碼的時候，出現了問題：

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/php/lib/php/extensions/pdo/pdo_mysql.so' - /usr/local/php/lib/php/extensions/pdo/pdo_mysql.so: undefined symbol: pdo_parse_params in Unknown on line 0
Using version ^3.4 for sonata-project/admin-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1

The requested package doctrine/orm (installed at v2.4.8, required as ^2.5) is satisfiable by doctrine/orm[v2.4.8] but these conflict with your requirements or minimum-stability.
Problem 2

doctrine/orm v2.5.4 requires ext-pdo * -> the requested PHP extension pdo is missing from your system.

doctrine/orm v2.5.3 requires ext-pdo * -> the requested PHP extension pdo is missing from your system.

doctrine/orm v2.5.2 requires ext-pdo * -> the requested PHP extension pdo is missing from your system.

doctrine/orm v2.5.1 requires ext-pdo * -> the requested PHP extension pdo is missing from your system.

doctrine/orm v2.5.0 requires ext-pdo * -> the requested PHP extension pdo is missing from your system.

Installation request for doctrine/orm ^2.5 -> satisfiable by doctrine/orm[v2.5.0, v2.5.1, v2.5.2, v2.5.3, v2.5.4].

To enable extensions, verify that they are enabled in those .ini files:

/etc/php.ini

/etc/php.d/curl.ini

/etc/php.d/fileinfo.ini

/etc/php.d/json.ini

/etc/php.d/phar.ini

/etc/php.d/zip.ini
You can also run php --ini inside terminal to see which files are used by PHP in CLI mode.　　

 

這裏的問題好像在告訴我，PHP 沒有安裝 PDO擴展，然而我 經過 phpinfo() 閱覽了一下，PDO 是真實存在的，我非常懵逼。

（關於擴展的小提示：一般在windows 上開發，經過 WAMP下直接在php.ini中啓用PDO就行（去掉;extension=php_pdo.dll前面的分號「;」），而linux上添加擴展 是以 .so 結尾的擴展名參考以下：https://blog.csdn.net/leedaning/article/details/46314521 經過上面的小提示，我發現我執行不了 phpize ， 而後發現我並無openssl  我差點去執行了 php 的 openssl 源碼安裝 相關擴展，我這樣的行爲是愚蠢的，由於擴展是有的，而我如今發現我居然也沒有openssl 這個C源碼擴展。緣由是我不是編譯安裝的而是經過集成安裝的環境；若真的這麼作了我可能會發現新的問題，也甚者會越走越遠....）

因而 經過 php -m 我發現php的擴展並無 pdo   mysqli ...， 而我執行 /usr/local/php/bin/php -m 發現居然有PDO   MYSQLI 擴展，我非常懵逼！原來問題是這樣的 CentOs 其實安裝完成後 會自帶了一個php5.3的版本，我一直沒有發現。而我經過 Composer install 的時候其實走的是默認PHP版本，那默認PHP版本就是CentOs自帶的 5.3的版本，個人天吶！！！

 

經過以下命令才真正的使用了PHP7.1的版本，果真沒有任何問題！

/usr/local/php/bin/php composer install

 

刪掉默認CentOs 自帶PHP5.3版本　

經過以下命令：匹配php,移除php

[root@localhost MerchantAdmin]# rpm -qa|grep php
php-mbstring-5.3.3-49.el6.x86_64
php-cli-5.3.3-49.el6.x86_64
php-devel-5.3.3-49.el6.x86_64
php-common-5.3.3-49.el6.x86_64
php-5.3.3-49.el6.x86_64
php-bcmath-5.3.3-49.el6.x86_64
[root@localhost MerchantAdmin]# yum uninstall php-common
Loaded plugins: fastestmirror, refresh-packagekit, security
No such command: uninstall. Please use /usr/bin/yum --help
[root@localhost MerchantAdmin]# yum remove php-common

 

刪除完以後執行了 php -v　　

[root@localhost MerchantAdmin]# php -v
-bash: /usr/bin/php: No such file or director　　

　因而可知 php 並無全局使用的權限，繼續修改添加全局目錄 

[root@localhost bin]# vim /etc/profile

　添加以下後兩句便可　

#set for nodejs
export NODE_HOME=/usr/local/src/node-v8.9.4
export PATH=$NODE_HOME/bin:$PATH
export PHP_HOME=/usr/local/php
export PATH=$PATH:$PHP_HOME/bin

　而後重啓 profile

source /etc/profile

[root@localhost bin]# source /etc/profile
[root@localhost bin]# 
[root@localhost bin]# 
[root@localhost bin]# php -v
PHP 7.1.7 (cli) (built: Jan 23 2018 19:32:07) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

 終於大功告成，坑太深！