Deprecated features in PHP 5.5.x

ext/mysql deprecation

The original MySQL extension is now deprecated, and will generate E_DEPRECATED errors when connecting to a database. Instead, use the MySQLi or PDO_MySQL extensions.

preg_replace /e modifier

The preg_replace /e modifier is now deprecated. Instead, use the preg_replace_callback function.

intl deprecations

IntlDateFormatter::setTimeZoneID and datefmt_set_timezone_id are now deprecated. Instead, use the IntlDateFormatter::setTimeZone method and datefmt_set_timezone function, respectively.

mcrypt deprecations

The following functions have been deprecated:

  • mcrypt_cbc
  • mcrypt_cfb
  • mcrypt_ecb
  • mcrypt_ofb