libldap-2.2.so.7: cannot open shared object file

I've installed the following packages on my RHEL 5: rpm -ivh php53-common-5.3.8-1.el5.x86_64.rpm rpm -ivh php53-5.3.8-1.el5.x86_64.rpm rpm -ivh php53-cli-5.3.8-1.el5.x86_64.rpm rpm -ivh php53-ldap-5.3.8-1.el5.x86_64.rpm and I see them with rpm -qa | grep php.  After I added the PHP module in httpd.conf, apache won't start: [root modules]# /etc/init.d/httpd2 start httpd: Syntax error on line 218 of /usr/local/apache2/conf/httpd.conf: Cannot load /usr/local/apache2/modules/libphp5.so into server: libldap-2.2.so.7: cannot open shared object file: No such file or directory [root modules]# ldd libphp5.so      linux-gate.so.1 =>  (0xffffe000)     libcrypt.so.1 => /lib/libcrypt.so.1 (0xf7926000)     librt.so.1 => /lib/librt.so.1 (0xf791d000)     libldap-2.2.so.7 => not found     liblber-2.2.so.7 => not found     libresolv.so.2 => /lib/libresolv.so.2 (0xf7908000)     libm.so.6 => /lib/libm.so.6 (0xf78df000)     libdl.so.2 => /lib/libdl.so.2 (0xf78da000)     libnsl.so.1 => /lib/libnsl.so.1 (0xf78c1000)     libxml2.so.2 => not found     libc.so.6 => /lib/libc.so.6 (0xf7768000)     libpthread.so.0 => /lib/libpthread.so.0 (0xf774e000)     /lib/ld-linux.so.2 (0x00877000) I've found libldap-2.3.so.0.2.3 and made symbolic links from it to /lib/libldap-2.2.so.7 and /usr/local/lib/libldap-2.2.so.7 Still ldd reports "libldap-2.2.so.7 => not found" Please help!