Other changes to extensions
  
   The following extensions can no longer be disabled during build
   configuration:
  
  
  
   Changes in extension behaviour, and new features:
  
  
   - 
    
     Date and Time
     - The TZ environment variable is no longer used to guess the timezone
    
   
- 
    
     cURL
     - cURL now supports SSH
    
   
- 
    
     Network
     - dns_check_record() now returns an extra "entries"
     index, containing the TXT elements.
    
   
- 
    
     Hash
     - The SHA-224 and salsa hash algorithms are now supported.
    
   
- 
    
     mbstring
     - Now supports CP850 encoding.
    
   
- 
    
     OCI8
     - A call to oci_close() on a persistent connection, or a
     variable referencing a persistent connection going out of scope, will now
     roll back any uncommitted transaction. To avoid unexpected behavior,
     explicitly issue a commit or roll back as needed. The old behavior can be
     enabled with the INI directive
     oci8.old_oci_close_semantics.
    
    
     Database Resident Connection Pooling (DRCP) and Fast Application 
     Notification (FAN) are now supported.
    
    
     Oracle External Authentication is now supported (except on Windows).
    
    
     The oci_bind_by_name() function now supports SQLT_AFC
     (aka the CHAR datatype).
    
   
- 
    
     OpenSSL
     - OpenSSL digest and cipher functions are now supported. It is also 
     now possible to access the internal values of DSA, RSA and DH keys.
    
   
- 
    
     Session
     - Sessions will no longer store session-files in "/tmp"
     when open_basedir restrictions
     apply, unless "/tmp" is explicitly added to the list of
     allowed paths.
    
   
- 
    
     SOAP
     Now supports sending user supplied HTTP headers.
    
   
- 
    
     MySQLi
     Now supports persistent connections, by prepending the hostname with 
     "p:".
    
   
- 
    
     Image Processing and GD
     The "JPG Support" index returned from gd_info() has
     been renamed to "JPEG Support".