PHP启动：动态库加载失败（PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/exte

　　今天在linux上面智障通常搞了很久，原本想安装个swoole的，而后用  php -m 的命令想看下安装的PHP扩展库，发现有的扩展库有的能够出来，有的加载失败，

　　加载失败的错误类型：

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/memcached.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/memcached.so: undefined symbol: zend_new_interned_string in Unknown on line 0

　　以下：

[root@pys /]# php -m
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/memcached.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/memcached.so: undefined symbol: zend_new_interned_string in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/swoole.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/swoole.so: undefined symbol: zend_new_interned_string in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/redis.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/redis.so: undefined symbol: zend_new_interned_string in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/curl.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/curl.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/fileinfo.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/fileinfo.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/gd.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/gd.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/json.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/json.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/phar.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/phar.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/zip.so' - /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/zip.so: cannot open shared object file: No such file or directory in Unknown on line 0
[PHP Modules]
bz2
calendar
Core
ctype
date
ereg
exif
filter
ftp
gettext
gmp

 上面的意思是 ：找不到扩展库的路径； 这是为何尼？不是有的扩展库也能够出来吗？

而后我是百度上找各类答案，并不能解决个人问题，最后本身发现问题所在：

由于我并无为全部的扩展库加了快捷连接，觉得在哪里只要用  php -m 的命令就能够查看全部的扩展库。

实际上是要：/usr/local/php7/bin/php  -m  这个命令才能够，个人是PHP7.0版本的，其余版本本身换下这个路径就好。

如此，就能够看到全部的扩展库了：

[root@pys bin]# /usr/local/php7/bin/php -m 
[PHP Modules]
bcmath
Core
ctype
curl
date
dom
fileinfo
filter
ftp
gd
gettext
hash
iconv
json
libxml
mbstring
mcrypt
memcached
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_sqlite
Phar
posix
redis
Reflection
session
shmop
SimpleXML
soap
sockets
SPL
sqlite3
standard
swoole
sysvsem
tokenizer
xml
xmlreader
xmlrpc
xmlwriter
zip
zlib

[Zend Modules]