This example app will show the difference between Foreach and splitter in Mule version 3.x. Collection splitter splits the incoming collection object and then you have to put a aggregator to collect the resultant objects. For each scope is a scope which does not change the payload and you get the same collection object once for each loop completes.

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:vm="http://www.mulesoft.org/schema/mule/vm" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
 xmlns:spring="http://www.springframework.org/schema/beans" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/current/mule-vm.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd">
 <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
 <flow name="foreachtestFlow">
 <http:listener config-ref="HTTP_Listener_Configuration" path="/test" allowedMethods="GET" doc:name="HTTP"/>
 <component class="foreachexample.CollectionPayloadComponent" doc:name="Java"/>
 <!-- <foreach doc:name="For Each">
 <choice doc:name="Choice">
 <when expression="#[payload == 'foreach']">
 <set-session-variable value="foreachVar" variableName="test" doc:name="Session Variable"></set-session-variable>
 </when>
 <otherwise>
 <set-session-variable value="BBQVar" variableName="test" doc:name="Session Variable"></set-session-variable>
 </otherwise>
 </choice>
 <flow-ref name="flow3" doc:name="Flow Reference"/>
 </foreach> -->
 <collection-splitter />
 <logger message="payload is : #[payload]" level="ERROR"/>
 <choice>
 <when expression="#[payload == 'foreach']">
 <set-session-variable value="foreachVar" variableName="test"></set-session-variable>
 </when>
 <otherwise> 
 <set-session-variable value="BBQVar" variableName="test"></set-session-variable>
 </otherwise>
 </choice> 
 <flow-ref name="flow3" />
 <set-payload value="dsadasd"/> 
 </flow>
 
 <flow name="flow2">
 <vm:inbound-endpoint path="foreach" doc:name="VM"/>
 <logger message=" session var value is #[sessionVars.test] and payload is #[payload]" level="ERROR" doc:name="Logger"/>
 </flow>

 <flow name="flow3">
 <vm:outbound-endpoint path="foreach" doc:name="VM"/>
 </flow>
 
</mule>

Post your comments and suggestions.