Apply UDF on Record

Apply UDF on Record

Use the Aerospike PHP client to apply a UDF on a record. Invoke the apply() Record UDF to perform an operation on a single record.

UDFs must register with the Aerospike server.

Provide the following to apply a UDF on a record:

• key tuple — Address a record in the database.
• module name — The UDF module.
• function name — The UDF function.
• function arguments — The arguments for the UDF function.

The example uses the registered a UDF module, sample, which contains the following function:

function list_append(rec, bin, value)
  local l = rec[bin]
  list.append(l, value)
  rec[bin] = l
  aerospike:update(rec)
  return 0
end

list_append() appends a value to the bin containing a list, and then updates the record.

To invoke list_append() and append "!!!" to the things bin:

$key = $db->initKey('test', 'demo', 'foo');
$db->apply($key, "sample", "list_append", ["things", "!!!"]);

Refer to the User-Defined Functions (UDF) Development Guide.