Php/docs/ldap.configuration

From Get docs

Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

LDAP configuration options
Name Default Changeable Changelog
ldap.max_links "-1" PHP_INI_SYSTEM  

For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set. Here's a short explanation of the configuration directives.

ldap.max_links int
The maximum number of LDAP connections per process.