After building php from scratch, an attempt is made to install it:

error: Failed dependencies:
        php-pear is needed by php-5.1.2-4.3.i386


An attempt is made to build php-pear-1.4.6-1.src.rpm, but this depends on php:

[root@chandler rpms]# rpmbuild --rebuild php-pear-1.4.6-1.src.rpm 
Installing php-pear-1.4.6-1.src.rpm
error: Failed build dependencies:
        php >= 5.1.0-1 is needed by php-pear-1.4.6-1.noarch

The workaround is to install php with --nodeps, then build and install php-pear.