version libmysqlclient_18 not defined in file libmysqlclient.so.18 with link time reference

快来打我* 2023-06-24 11:24 13阅读 0赞

在运行php -m时报错：

**PHP Warning:  PHP Startup: Unable to load dynamic library 'mysqli.so' (tried: /usr/lib64/php/modules/mysqli.so (/usr/lib64/php/modules/mysqli.so: symbol mysql\_change\_user, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference), /usr/lib64/php/modules/mysqli.so.so (/usr/lib64/php/modules/mysqli.so.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/lib64/php/modules/pdo\_mysql.so' (tried: /usr/lib64/php/modules/pdo\_mysql.so (/usr/lib64/php/modules/pdo\_mysql.so: symbol mysql\_options, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference), /usr/lib64/php/modules//usr/lib64/php/modules/pdo\_mysql.so.so (/usr/lib64/php/modules//usr/lib64/php/modules/pdo\_mysql.so.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 'mysqli.so' (tried: /usr/lib64/php/modules/mysqli.so (/usr/lib64/php/modules/mysqli.so: symbol mysql\_change\_user, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference), /usr/lib64/php/modules/mysqli.so.so (/usr/lib64/php/modules/mysqli.so.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 'pdo\_mysql.so' (tried: /usr/lib64/php/modules/pdo\_mysql.so (/usr/lib64/php/modules/pdo\_mysql.so: symbol mysql\_options, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference), /usr/lib64/php/modules/pdo\_mysql.so.so (/usr/lib64/php/modules/pdo\_mysql.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0**  
看起来有一大堆东西。实际上这几个都有一个共同的一句话，那就是上面标红的那部分

其实这是因为**libmysqlclient.so.18这个文件冲突了，我们可以看一下：**

[root@VM_0_9_centos ~]# find / -name "libmysqlclient.so.18"
    /home/mysql/lib/libmysqlclient.so.18
    /usr/lib64/libmysqlclient.so.18

我们发现实际上已经存在两个这玩意，这肯定会冲突，而且php肯定是使用第二个，然而第二个并不行，我们需要的是mysql带的lib，因此，我们直接将第二个干掉，然后增加一个软链即可：

[root@VM_0_9_centos ~]# ln -s /home/mysql/lib/libmysqlclient.so.18 /usr/lib64/libmysqlclient.so.18
    ln: failed to create symbolic link ‘/usr/lib64/libmysqlclient.so.18’: File exists
    [root@VM_0_9_centos ~]# rm -rf /usr/lib64/libmysqlclient.so.18
    [root@VM_0_9_centos ~]# ln -s /home/mysql/lib/libmysqlclient.so.18 /usr/lib64/libmysqlclient.so.18

然后再次运行php -m就不会出错了