21 行
		
	
	
	
		
			418 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
		
		
			
		
	
	
			21 行
		
	
	
	
		
			418 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
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								<?php
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								class MigrationVersion extends CI_Model {
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									function getMigrationVersion() {
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								        $this->db->select_max('version');
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								        $query = $this->db->get('migrations');
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								        $migration_version = $query->row();
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								        if ($query->num_rows() == 1) {
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								            $migration_version = $query->row()->version;
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								            return $migration_version;
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								        } else {
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								            return null;
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								        }
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								    }
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								}
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								?>
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