New global constants

Backward incompatible changes

Migrating from PHP 7.1.x to PHP 7.2.x

New global constants

Password Hashing

PASSWORD_ARGON2I
PASSWORD_ARGON2_DEFAULT_MEMORY_COST
PASSWORD_ARGON2_DEFAULT_TIME_COST
PASSWORD_ARGON2_DEFAULT_THREADS

PDO

PDO::PARAM_STR_NATL
PDO::PARAM_STR_CHAR
PDO::ATTR_DEFAULT_STR_PARAM

LDAP

LDAP_EXOP_START_TLS
LDAP_EXOP_MODIFY_PASSWD
LDAP_EXOP_REFRESH
LDAP_EXOP_WHO_AM_I
LDAP_EXOP_TURN

Backward incompatible changes

Migrating from PHP 7.1.x to PHP 7.2.x