Removed functions

call_user_method and 
call_user_method_array
These functions were deprecated in PHP 4.1.0 in favour of 
call_user_func and 
call_user_func_array. You may also want to consider using variable functions and/or the 
... operator.
All ereg* functions
All 
ereg functions were removed. PCRE is a recommended alternative.
mcrypt aliases
The deprecated 
mcrypt_generic_end function has been removed in favour of 
mcrypt_generic_deinit.
Additionally, the deprecated 
mcrypt_ecb, 
mcrypt_cbc, 
mcrypt_cfb and 
mcrypt_ofb functions have been removed in favour of using 
mcrypt_decrypt with the appropriate 
MCRYPT_MODE_* constant.
All ext/mysql functions
All ext/mysql functions were removed. For details about choosing a different MySQL API, see Choosing a MySQL API.
All ext/mssql functions
All 
ext/mssql functions were removed. PDO_SQLSRV, PDO_ODBC, SQLSRV, Unified ODBC API
intl aliases
The deprecated 
datefmt_set_timezone_id and IntlDateFormatter::setTimeZoneID aliases have been removed in favour of 
datefmt_set_timezone and IntlDateFormatter::setTimeZone, respectively.
set_magic_quotes_runtime
set_magic_quotes_runtime, along with its alias 
magic_quotes_runtime, have been removed. They were deprecated in PHP 5.3.0, and became effectively non-functional with the removal of magic quotes in PHP 5.4.0.
set_socket_blocking
The deprecated 
set_socket_blocking alias has been removed in favour of 
stream_set_blocking.
dl in PHP-FPM
dl can no longer be used in PHP-FPM. It remains functional in the CLI and embed SAPIs.
GD Type1 functions
Support for PostScript Type1 fonts has been removed from the GD extension, resulting in the removal of the following functions:
imagepsbbox
imagepsencodefont
imagepsextendfont
imagepsfreefont
imagepsloadfont
imagepsslantfont
imagepstext
Using TrueType fonts and their associated functions is recommended instead.