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
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