Deprecated features in PHP 5.3.x

PHP 5.3.0 introduces two new error levels:
E_DEPRECATED and
E_USER_DEPRECATED. The
E_DEPRECATED error level is used to
indicate that a function or feature has been deprecated. The
E_USER_DEPRECATED level is intended
for indicating deprecated features in user code, similarly to the
E_USER_ERROR and
E_USER_WARNING levels.

The following is a list of deprecated INI
directives. Use of any of these INI directives will cause an
E_DEPRECATED error to be thrown at
startup.

• define_syslog_variables
• register_globals
• register_long_arrays
• safe_mode
• magic_quotes_gpc
• magic_quotes_runtime
• magic_quotes_sybase
• Comments starting with
  ‘#’ are now deprecated in .INI files.

Deprecated functions:

• call_user_method() (use call_user_func() instead)
• call_user_method_array() (use call_user_func_array() instead)
• define_syslog_variables()
• dl()
• ereg() (use preg_match()
  instead)
• ereg_replace() (use preg_replace() instead)
• eregi() (use preg_match()
  with the ‘i’ modifier instead)
• eregi_replace() (use preg_replace() with the ‘i’ modifier
  instead)
• mcrypt_generic_end()
• set_magic_quotes_runtime() and its alias,
  magic_quotes_runtime()
• session_register() (use the $_SESSION superglobal
  instead)
• session_unregister() (use the $_SESSION superglobal
  instead)
• session_is_registered() (use the $_SESSION superglobal
  instead)
• set_socket_blocking() (use stream_set_blocking() instead)
• split() (use preg_split()
  instead)
• spliti() (use preg_split()
  with the ‘i’ modifier instead)
• sql_regcase()
• mysql_db_query() (use mysql_select_db() and mysql_query() instead)
• mysql_escape_string() (use mysql_real_escape_string()
  instead)
• Passing locale category
  names as strings is now deprecated. Use the LC_* family of
  constants instead.
• The is_dst parameter to mktime(). Use the new timezone handling
  functions instead.

Deprecated features:

• Assigning the return
  value of new by reference is now deprecated.
• Call-time
  pass-by-reference is now deprecated.