编辑/ThinkPHP/Library/Think/Db/Driver.class.php

找到connect方法

/** * 连接数据库方法 * @access public */public function connect($config='',$linkNum=0,$autoConnection=false) {    if ( !isset($this->linkID[$linkNum]) ) {        if(empty($config))  $config =   $this->config;        try{            if(empty($config['dsn'])) {                $config['dsn']  =   $this->parseDsn($config);            }            if(version_compare(PHP_VERSION,'5.3.6','<=')){                 // 禁用模拟预处理语句                $this->options[PDO::ATTR_EMULATE_PREPARES]  =   false;            }            $this->linkID[$linkNum] = new PDO( $config['dsn'], $config['username'], $config['password'] , $this->options);        }catch (\PDOException $e) {            if($autoConnection){                trace($e->getMessage(),'','ERR');                return $this->connect($autoConnection,$linkNum);            }elseif($config['debug']){                E($e->getMessage());            }        }    }    return $this->linkID[$linkNum];}

注释下面这行代码即可

//$this->options[PDO::ATTR_EMULATE_PREPARES]  =   false;