chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci$ mkdir foo
chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci$ mv PDO_OCI-1.0.1.tgz foo/
chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci$ cd foo/
chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci/foo$ tar xvfz PDO_OCI-1.0.1.tgz
package.xml
tar: A lone zero block at 8
chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci/foo$ ls -alsh
total 28K
4.0K drwxr-xr-x 2 chris chris 4.0K Apr 18 22:26 .
4.0K drwxr-xr-x 5 chris chris 4.0K Apr 18 22:26 ..
 16K -rw-r--r-- 1 chris chris  16K Apr 18 22:24 PDO_OCI-1.0.1.tgz
4.0K -rw-r--r-- 1 chris chris 2.7K Apr 18 22:24 package.xml
chris@catch22:~/usr/src/php/php5-5.4.0/ext/pdo_oci/foo$