N1.
It’s highly recommended that you fix the library with ‘execstack -c <libfile>’, or link it with ‘-z noexecstack’.
It means that it is recommended to use sunjdk instead of linux’s own openjdk

N2.linux 64bit system ZendGuardLoader.so: wrong ELF class: ELFCLASS32 error
1. Download Zend Guard
32位 http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23-i386.tar.gz
64位 http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23-x86_64.tar.gz
mkdir /usr/local/zend
tar -zxvf ZendGuardLoader-php-5.3-linux-glibc23-i386.tar.gz
sudo cp ZendGuardLoader-php-5.3-linux-glibc23-i386/php5.3.x/ZendGuardLoader.so /usr/local/zend/
2. Set
vim /etc/php.ini
Finally add.
zend_extension=/usr/local/zend/ZendGuardLoader.so
The reason for the above error is that the 64-bit system is using the 32-bit ZendGuardLoader.so.
The solution is to download a 64-bit ZendGuardLoader.so file that corresponds to the PHP version
1、Download Zend Guard
32位 http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23-i386.tar.gz
64位 http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23-x86_64.tar.gz
mkdir /usr/local/zend
tar -zxvf ZendGuardLoader-php-5.3-linux-glibc23-i386.tar.gz
sudo cp ZendGuardLoader-php-5.3-linux-glibc23-i386/php5.3.x/ZendGuardLoader.so /usr/local/zend/
2. Set
vim /etc/php.ini
Finally Add:
zend_extension=/usr/local/zend/ZendGuardLoader.so