campaign costs

<?php

// Determine Campaign Costs 


add_filter('gform_pre_render_2', 'campaign_cost');
function campaign_cost($form){
  //Get current form page
	$current_page = GFFormDisplay::get_current_page($form["id"]);
	
	//If the current form page is page 1
	if ($current_page == 1) {
		$count1=get_post_meta(26,'byc1',true) + 1;
		update_post_meta(26, 'byc1', $count1); 
	}
	//If the current form page is page 2
	if ($current_page == 2) {
		$count2=get_post_meta(26,'byc1',true) + 1;
		update_post_meta(26, 'byc2', $count2); 
	}
	//If the current form page is page 3
	if ($current_page == 3) {
		$count3= get_field('byc3',26) + 1;
		update_post_meta(26, 'byc3', $count3); 
	}

	//If the current form page is page 4
	if ($current_page == 4) {
		$count4= get_field('byc4',26) + 1;
		update_post_meta(26, 'byc4', $count4); 

		if($_POST["input_6"] > 1000) :
			$attendance = 1000; // limit base license to 1000 if attendance is larger than 1000
		else : 
			$attendance = $_POST["input_6"];
		endif;
		$_POST["input_31_2"] = $attendance;
		$_POST["input_34_2"] = ($_POST["input_17"] * 39);
		$_POST["input_35_2"] = ($_POST["input_15"] * 10); 
		$_POST["input_39"] = ($_POST["input_17"] + $_POST["input_15"]) / $attendance;
		
		if($_POST["input_39"] >= 0.1) : 
			$with = get_field('with_min',26) + 1;
			update_post_meta(26, 'with_min', $with); 
		elseif($_POST["input_39"] < 0.1) : 
			$without = get_field('without_min',26) + 1;
			update_post_meta(26, 'without_min', $without);
		endif; 
		
		if($_POST["input_20_4"] == 'Georgia') :
			$_POST["input_38_2"] = 0.07 * ($_POST["input_31_2"] + $_POST["input_34_2"] + $_POST["input_35_2"]);
		else :
			$_POST["input_38_2"] = 0;
		endif; 
		$units = 1 + ($_POST["input_17"] * 2) + $_POST["input_15"]; // 1 unit included by default for the DVD
		$lbs = intval(($units + 2) / 3); //estimates weight to next highest lb
		if($lbs <= 9 ) : 
			$_POST["input_30"] = 10;
		elseif($lbs > 9 && $lbs <= 20 ) :
			$_POST["input_30"] = 17;
		
		endif;
					
	}
	//Return the form
	return $form;
}