PHP Tier Price Table – Display on Product View Page

The problem is you can add a block only to another block which has core/text_list type. So you need to find a closest block of such type to a place where you want to position your block.

If you want to make it for simple products only (which follows out of your question) you can do something like this:

<?xml version="1.0"?>
<layout>
    <PRODUCT_TYPE_simple>
        <reference name="product.info.simple.extra">
            <block type="core/template" name="test" template="test.phtml" before="-"/>
        </reference>
    </PRODUCT_TYPE_simple>
</layout>

for all types of products this is the closest you can get:

<?xml version="1.0"?>
<layout>
    <catalog_product_view>
        <reference name="alert.urls">
            <block type="core/template" name="test" template="test.phtml" after="-"/>
        </reference>
    </catalog_product_view>
</layout>

You can try following way.

$client = new SoapClient('http://magentohost/api/v2_soap/?wsdl');
$session = $client->login($apiUser,$apiKey);
$productId = 166;
$result = $client->catalogProductAttributeTierPriceInfo(
    $session,
    $productId
);
print_r($result);

For more information click here .