Configure line is
./configure  --enable-track-vars --with-oci8=/u01/app/oracle/product/8.1.5 --enable-sigchild --with-oracle=/u01/app/oracle/product
/8.1.5 --with-mysql=/usr/local/mysql --without-pear --with-mcrypt=/usr/local --with-apache=../apache_1.3.12

Line of code is question that crashes PHP is (note missing  quote):
$sql = sprintf("UPDATE calsite SET calsite_name='%s WHERE calsite_id=%s", $calsite_name,$calsite_id);
$stmt = ociparse($db,$sql);

Backtrace:
#0  0x80b1b05 in php_if_ociparse ()
#1  0x80f70ec in execute ()
#2  0x807fc8b in php_execute_script ()
#3  0x809a840 in apache_php_module_main ()
#4  0x807c17b in send_php ()
#5  0x807c1bc in send_parsed_php ()
#6  0x8113653 in ap_invoke_handler ()
#7  0x8126b89 in ap_some_auth_required ()
#8  0x8126bec in ap_process_request ()
#9  0x811e48e in ap_child_terminate ()
#10 0x811e61c in ap_child_terminate ()
#11 0x811e779 in ap_child_terminate ()
#12 0x811eda6 in ap_child_terminate ()
#13 0x811f533 in main ()
#14 0x406059cb in __libc_start_main (main=0x811f1ec <main>, argc=2, argv=0xbffff934, init=0x8062c70 <_init>,
    fini=0x814caac <_fini>, rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffff92c) at ../sysdeps/generic/libc-start.c:92