How can one troubleshoot the error "ldap connect not available" when trying to use LDAP with PHP on a server?

To troubleshoot the error "ldap connect not available" when trying to use LDAP with PHP on a server, you need to ensure that the LDAP extension is enabled in your PHP configuration. You can do this by checking your php.ini file or using the phpinfo() function to verify if the LDAP extension is loaded. If the LDAP extension is not enabled, you will need to enable it by installing the necessary LDAP libraries and configuring PHP to use them.

// Check if LDAP extension is enabled
if (!extension_loaded('ldap')) {
    echo 'LDAP extension not available';
    // Enable LDAP extension
    // For example, on Ubuntu, you can install the LDAP extension with: sudo apt-get install php-ldap
}