trigger Ph1_calculatefieldLead on Lead (after update,after insert) {

//Lead [] le=Trigger.new;

Integer TotalPassToSales=0;
String LeadsViaCamapign='0125000000010WY';
String NonCampaginLeads='0125000000010WT';

for (Lead leLoop:Trigger.new){

 Integer CountCampaignPresent=[Select Count() from CampaignMember where LeadId=:leLoop.Id];
 
 //leLoop.adderror('e'+CountCampaignPresent);
 
 if(CountCampaignPresent==1){
 
  /* Select campaignid of linked Campaign */
  String LeadCampaignId=[Select CampaignId from CampaignMember where LeadId=:leLoop.Id].CampaignId;

  /* Select all LeadIds of Leads linked with a particular campaign */
  //CampaignMember [] LeadCampaignMember=[Select LeadId,CampaignId from CampaignMember where CampaignId=:LeadCampaignId];

  for(CampaignMember LeadCampaignMemberLoop:[Select LeadId,CampaignId from CampaignMember where CampaignId=:LeadCampaignId]){

   /* Check LeadId is not null */
   if(LeadCampaignMemberLoop.LeadId!=null){

    /* Select information about Lead linked with a particular Campaign*/
    Lead LeadCampaignLoop=[Select Status,lead_internal_lead_status_pck__c,RecordTypeid from Lead where id=:LeadCampaignMemberLoop.LeadId];

    /* Calculate Total Pass To Sales Leads */
    if(LeadCampaignLoop.Status=='Open - Passed to Sales' || LeadCampaignLoop.Status=='Closed - Accepted by Sales' || LeadCampaignLoop.Status=='Closed - Rejected by Sales' ){
     TotalPassToSales=TotalPassToSales+1;
     }
                }
}
/* Select campaign for Lead whose status is changed */
    Campaign camp=[select cam_tot_pass_to_sales_lead_num__c from campaign where id=:LeadCampaignId];

    /* Populating values into concerned fields of Campaign */
     camp.cam_tot_pass_to_sales_lead_num__c=TotalPassToSales;
               }
}