How do you implement in PHP of using LDAP Pool Connection after we set the connection properties in apache ldap.conf?

Question

I'm new to PHP, was interested in apache LDAP connection pool topic : LDAP Pool

I've found several example but mostly written in Java.

Is there a sample PHP code that I can refer to, such as documentation for PHP of implementing LDAP connection pool? How should PHP call a resource manager that gets the connection from here?

<Location "/ldap-status">
    SetHandler ldap-status

    Require host yourdomain.example.com

    Satisfy any
    AuthType Basic
    AuthName "LDAP Protected"
    AuthBasicProvider ldap
    AuthLDAPURL "ldap://127.0.0.1/dc=example,dc=com?uid?one"
    Require valid-user
</Location>

Thank you!