Fatal error: Call to undefined function: ldap_connect()

Add path of your PHP to Windows System Path. The path should contain php.exe.

After adding the path open a new command prompt and make sure php.exe is in path by typing

C:\>php --help

Once you see proper help message from above, enable the php_ldap.dll extension in php.ini

Also copy php_ldap.dll from php/ext directory to apache/bin folder

Restart wamp and phpinfo() will now show ldap enabled.

If you are a Windows user, this is a common error when you use XAMPP since LDAP is not enabled by default.

You can follow this steps to make sure LDAP works in your XAMPP:

• [Your Drive]:\xampp\php\php.ini: In this file uncomment the following line:

   extension=php_ldap.dll
  

• Move the file: libsasl.dll, from [Your Drive]:\xampp\php to [Your Drive]:\xampp\apache\bin (Note: moving the file is needed only for XAMPP prior to version: 5.6.28)

• Restart Apache.

• You can now use functions of the LDAP Module!

If you use Linux:

For php5:

sudo apt-get install php5-ldap

For php7:

sudo apt-get install php7.0-ldap

If you are using the latest version of PHP you can do

sudo apt-get install php-ldap

running the above command should do the trick.

if for any reason it doesn't work check your php.ini configuration to enable ldap, remove the semicolon before extension=ldap to uncomment, save and restart Apache