how to know php build directory?

i need it for eaccelerator installiation.
http://eaccelerator.net/wiki/InstallFromSource
says that i need to know where is my php5 installiation.
I had php4 ,but when i removed php4 and installed php5, phpize information shows that it is from php4. But i need it for php5,because eaccelerator tries to install for php4,not for php5 Also php command not found in shell

 

how did you install php4 / php5? With any package manager or what exactly did you do?

 

I installed php4 and php5 with apt-get install. Php4 removed with apt-get remove. After removement of php4 some files left,and i removed them manually.Maybe i without intention deleted some usefull files ;/

 

Please make sure that the package php5-dev is installed.

 

Thanks,falko.now i installed eaccelerator.I did everything as http://eaccelerator.net/wiki/InstallFromSource says.
I changed php.ini,added:

Code:

extension="eaccelerator.so"
eaccelerator.shm_size="16"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"

restarted apache,but when i look in phpinfo there isn't any field of eaccelerator.There is eaccelerator.so in php5 extension dir,but it's marked green,however other extensions are grey in Midnight Commander.Maybe with this something wrong?

 

I thought that maybe it's cause of my php version, that is php5.0.5 .
On http://trac.lighttpd.net/xcache/ says that php5.0 is not supported,but xcache is not equal to Eaccelerator?

 

I solved my problem It was in eAccelerator version 0.9.5.1 , i downloaded 0.9.5 version and it works fine for me.