Error Starting PHP in Netscape 3.6 symbol zend_get_compiled_lineno: referenced symbol not found

On Solaris 8 using PHP 4 Netscape 3.6, When trying to start Netscape get following error. conf_init: Error running init function load-modules: dlopen of /usr/local/php-4.0.6/libs/libphp4.so failed (ld.so.1: ns-httpd: fatal: relocation error: file /usr/local/php-4.0.6/libs/libphp4.so: symbol zend_get_compiled_lineno: referenced symbol not found) Also when trying: ldd -r libphp4.so get lots of output like the following: symbol not found: zend_get_parameters_ex (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: wrong_param_count (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: zval_add_ref (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: php_check_open_basedir (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: _array_init (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: add_assoc_long_ex (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: add_assoc_string_ex (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: convert_to_double (/usr/local/php-4.0.6/libs/libphp4.so) symbol not found: zend_restore_compiled_filename (/usr/local/php-4.0.6/libs/libphp4.so) Anyone seen this before? Can anyone help. Thanks.