带有date（）的时间戳抛出错误，它不是时间戳[重复]

I am getting the following error from the following code.

$start_date = '1452953820';
$date = date($start_date,"jS M Y");

Error: date() expects parameter 2 to be long, string given

I don't understand how to sort this, as the string is a timestamp.

Any ideas?

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It should be like this,,

$date = date("jS M Y",$start_date);// swapping arguments.

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