do you have a directadmin server?
What are you talking about php-devel then. That sounds like a yum package. Everything is installed via custombuild. Check the custombuild section on how to install software.
php_ini_type=recommended
ioncube=yes
zend=yes
xcache=yes
memcache=yes
php-devel=yes
php-gd=yes
ffmpeg-php=yes
[root@server /]# wget http://repo.webtatic.com/yum/centos/5/x86_64/php-devel-5.3.28-2.w5.x86_64.rpm
--2014-02-12 09:51:14-- http://repo.webtatic.com/yum/centos/5/x86_64/php-devel-5.3.28-2.w5.x86_64.rpm
Resolving repo.webtatic.com... 107.170.28.162
Connecting to repo.webtatic.com|107.170.28.162|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 647479 (632K) [application/x-redhat-package-manager]
Saving to: `php-devel-5.3.28-2.w5.x86_64.rpm'
100%[======================================>] 647,479 4.07M/s in 0.2s
2014-02-12 09:51:14 (4.07 MB/s) - `php-devel-5.3.28-2.w5.x86_64.rpm' saved [647479/647479]
[root@server /]# rpm -ivh php-devel-5.3.28-2.w5.x86_64.rpm
warning: php-devel-5.3.28-2.w5.x86_64.rpm: Header V4 DSA signature: NOKEY, key ID cf4c4ff9
error: Failed dependencies:
php = 5.3.28-2.w5 is needed by php-devel-5.3.28-2.w5.x86_64
[root@server /]# php -v
PHP 5.3.28 (cli) (built: Feb 12 2014 09:02:17)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2013 Zend Technologies
with XCache v3.1.0, Copyright (c) 2005-2013, by mOo
with the ionCube PHP Loader v4.5.2, Copyright (c) 2002-2014, by ionCube Ltd., and
with Zend Guard Loader v3.3, Copyright (c) 1998-2010, by Zend Technologies
with XCache Cacher v3.1.0, Copyright (c) 2005-2013, by mOo
[root@server /]# uname -a
Linux 2.6.18-348.el5 #1 SMP Tue Jan 8 17:53:53 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
Did you mean that You should NOT install php-devel from your distro repo?You should install php-devel from your distro repo.