PHP: Remove all characters from a string except numerical digit

You can use following example for removing character leaving all the numerical digit

$nano_number=preg_replace('/[^0-9.]/', '', $nano_string);

Oracle: ORA-12638-Credential Retrieval Failed

You will find original entry in $ORACLE_HOME\Network\Admin\sqlnet.ora

SQLNET.AUTHENTICATION_SERVICES= (NTS)

You have to Change the

SQLNET.AUTHENTICATION_SERVICES= (NONE)


Your problem will be solved.