数组转json，json转数组

[size=large][b]thinkphp后台用到了将数组转成json数据传到前台html页面[/b][/size]

后台getvsAuditdbName方法

public function getvsAuditdbName(){
         exec("sudo ls "./var/koalii/data/eseal_vs/db/|grep audit",$resultarray,$res);
         $this->ajaxReturn(json_encode($resultarray));
}

[size=large][b]前台js方法[/b][/size]

function getvsAuditdbName(needSelected){
    $.post("__URL__/getvsAuditdbName",function(data){
        var obj = JSON.parse(eval(data));
    });
}