Other changes
  
   - 
    
     The default character set for htmlspecialchars() 
     and htmlentities() is now UTF-8,
     instead of ISO-8859-1.  Note that changing your output
     charset via the default_charset
     configuration setting does not affect htmlspecialchars/htmlentities unless
     you are passing "" (an empty string) as the encoding parameter to your 
     htmlspecialchars()/htmlentities() calls.
     Generally we do not recommend doing this because you should be able to
     change your output charset without affecting the runtime charset used by
     these functions. The safest approach is to explicitly set the charset on
     each call to htmlspecialchars() and 
     htmlentities().
    
   
- 
    
     E_ALLnow includesE_STRICTlevel
     errors in the error_reporting configuration directive.
- 
    
     SNMP now has an OOP API.
    
    
      Functions now return FALSEon every error condition including SNMP-related
      (no such instance, end of MIB, etc). Thus, in particular, breaks previous behavior
      of get/walk functions returning an empty string on SNMP-related errors.
    
    
      Multi OID get/getnext/set queries are now supported.
    
    
     Dropped UCD-SNMP compatibility code, consider upgrading to net-snmp v5.3+, Net-SNMP v5.4+ is
     required for Windows version.
    
    
     In sake of adding support for IPv6 DNS name resolution of
     remote SNMP agent (peer) is done by extension now, not by Net-SNMP library anymore.
- 
    
     OpenSSL now supports AES.
    
   
- 
    
     CLI SAPI doesn't terminate any
     more on fatal errors when using interactive mode with readline support.
    
   
- 
    
     $_SERVER['REQUEST_TIME_FLOAT']
     has been added to include microsecond precision.
    
   
- 
    
     Added new hash algorithms: fnv132, fnv164, joaat
    
   
- 
    
     Chained string offsets - e.g. $a[0][0] where $a is a string - now work.
    
   
- 
    
     Arrays cast from SimpleXMLElement now always contain all nodes instead of
     just the first matching node. All SimpleXMLElement children are now always
     printed when using var_dump(), var_export() and
     print_r().
    
   
- 
    
     It's now possible to enforce the class' __construct arguments in an abstract
     constructor in the base class.