Code Duplication    Length = 4-4 lines in 2 locations

web_interface/astpp/application/modules/invoices/controllers/invoices.php 2 locations

@@ 828-831 (lines=4) @@
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			$currency =$currency[0];
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			$date = date('Y-m-d H:i:s');              
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			   $invoice_total_query = $this->db_model->getSelect("*", "invoices", array("id"=> $invoice_id));
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		if ( $invoice_total_query ->num_rows() > 0) {
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		 $invoice_total_query= $invoice_total_query->result_array();
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		 $debit=$invoice_total_query[0]['amount'];
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		}             
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			  $query="select  sum(credit) as credit from invoice_details where invoiceid = ".$invoice_id." AND item_type !='PAYMENT' Group By invoiceid";  
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		//echo $query; exit;
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		$invoice_total_query=$this->db->query($query);
@@ 949-952 (lines=4) @@
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		$date = date('Y-m-d H:i:s'); 
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		$invoice_total_query = $this->db_model->getSelect("*", "invoices", array("id"=> $invoice_id));
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		if ( $invoice_total_query ->num_rows() > 0) {
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		 $invoice_total_query= $invoice_total_query->result_array();
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		 $debit=$invoice_total_query[0]['amount'];
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		}
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		$query="select  sum(credit) as credit from invoice_details where invoiceid = ".$invoice_id."  AND item_type !='PAYMENT'  Group By invoiceid"; 
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		//echo $query; exit;