安装版本为：xampp-linux-x64-5.6.34-0-installer.run
centos 版本为：CentOS release 6.9 (Final)
[root@iZm5eik57sceo3kq6asrexZ lampp]# ./xampp start
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/bin/bash: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
id: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/share/xampp/xampplib: line 11: test: -ne: unary operator expected
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/httpd: error while loading shared libraries: librt.so.1: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: hostname: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: /bin/sh: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
解决办法：
vi /opt/lampp/lampp
把export LD_ASSUME_KERNEL=2.2.5这一行，
修改为export LD_ASSUME_KERNEL=2.8.0，
执行./xampp start 可以成功启动了