You can create your own SOAP Client to send a header in a minute using PHP. PHP provides SOAP API which has numerous functions to create SOAP Client, initialize SOAP Header and also setting SOAP Header. Actually when interacting with SOAP Server, the server requires a header to be sent which have API key. The header name will be APIKEY and the value will be the key itself. In example below the namespace is used for the API call is “MyNamespace”.
