- PHP Manual
- Appendices
- Migrating from PHP 5.5.x to PHP 5.6.x
- What has changed in PHP 5.6.x
- Backward Incompatible Changes
- New features
- Deprecated features in PHP 5.6.x
- Changed Functions
- New Functions
- Other changes to extensions
- New Global Constants

Other changes to extensions
Migrating from PHP 5.4.x to PHP 5.5.x
Migrating from PHP 5.5.x to PHP 5.6.x
PHP Manual

## New Global Constants

### LDAP

- `LDAP_ESCAPE_DN`
- `LDAP_ESCAPE_FILTER`