js 用 setTimeout     引用當初做的專案一個例項  

$('#real_submit').click(function () {
    $.ajax({
        cache: true,
type: "POST",
url: "{:U('ajax_add_real')}",
data: $('#real_form').serialize(),
async: false,
success: function (resp) {
            if (resp.status == 1) {
                $.toast(resp.message);
setTimeout(function(){
                    location
 
.href = resp.url;
},2000);
} else {
                $.toast(resp.info, "cancel");
}
        }
    });
});

PHP  用sleep   http://www.w3school.com.cn/php/func_misc_sleep.asp

<?php
echo date('h:i:s') . "<br />";

//暫停 10 秒
sleep(10);

//重新開始
echo date('h:i:s');

?>