There are alot of SQL related compiler warnings when compiling PHP as follows

./configure --with-mysql --enable-trans-sid --enable-track-vars --enable-track-errors --with-esoob --with-apxs=/home/cnewbill/testapache/bin/apxs

These warnings appear whether I compile as CGI or static Apache Module.  They occur for virtually every ODBC function so I will only include a couple lines since they are all the same.

php_odbc.c: In function `_free_odbc_result':
php_odbc.c:158: warning: passing arg 1 of `SQLFreeStmt' makes integer from pointer without a cast
php_odbc.c: In function `_close_odbc_conn':
php_odbc.c:177: warning: passing arg 1 of `SQLDisconnect' makes integer from pointer without a cast

I am using EasySoft OOB and the bundled unixODBC driver manager. 

(gdb) bt
#0  0x40293ca0 in ?? ()
#1  0x401619d1 in __libc_start_main () at ../sysdeps/generic/libc-start.c:92

One note I am having better luck with PHP4 as a DSO. 

Example script

<?

$conn_id = odbc_connect("onewest","*******","******")

if ($conn_id == "") {
  print "Could not connect.\n";
} else {
  print "Connected!!\n";
}

?>

output from CGI php

[root@ns dosojin]# php odbc_test.html
X-Powered-By: PHP/4.0.0
Content-type: text/html

Connected!!
Segmentation fault (core dumped)