Description:
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When doing an ldap parallel search, it is not possible to specify the attributes I want to retrieve per-query, only per operation.

I want to read a set of properties for a read operation of i.e. OU=Computers,DC=example,DC=com and a different set of properties for OU=Users,DC=example,DC=com . I want to do a parallel read operation by combining all the query parameters (links, search bases etc.) into arrays, but I cannot group the attributes arrays as such; I can only provide one array with the attributes, otherwise only DN is returned in the resultset.

Test script:
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$con = ldap_connect( 'example.com' );

ldap_set_option( $con, LDAP_OPT_PROTOCOL_VERSION, 3 );
ldap_set_option( $con, LDAP_OPT_REFERRALS, 0 );

ldap_bind( $con, 'User', 'password' );

// use the same connection for both read queries
$connections = array( $con, $con );

// Read attribs from Computers and Users containers
$dns = array( 'OU=Computers,DC=example,DC=com', 'OU=Users,DC=example,DC=com' );

// Needed for the read operation
$filters = array( '(objectclass=*)', '(objectclass=*)' );

$attribSet1 = array( 'name', 'objectclass' ); // attribs I want from Computers
$attribSet2 = array( 'cn', 'objectcategory' ); // attribs I want from Users

// Combining the attributes like this causes the erroneous behaviour
$getThese = array( $attribSet1 , $attribSet2 );

// Do a parallel read operation
$result_ids = ldap_read( $connections, $dns, $filters, $getThese );

$data0 = ldap_get_entries( $con, $result_ids[0] );
$data1 = ldap_get_entries( $con, $result_ids[1] );

print_r( $data0 ); // Only DN attribute retrieved
print_r( $data1 ); // Only DN attribute retrieved

/*
Doing the read query like this works, but I have to specify the attribute set for the whole operation:
$result_ids = ldap_read( $connections, $dns, $filters, $getThese[0] );
*/

Expected result:
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for print_r( $data0 ); I expect to have these attributes present:
name, objectclass

for print_r( $data1 ); I expect to have these attributes present:
cn, objectcategory

Actual result:
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I get only dn attribute, which is returned for every ldap query