邏輯在PHP

Question

我只想問比較2日，我有3個日期，日期的今天，date_of_needed和2周領先於其他日期，我有這樣的代碼：

$DateNeeded = $this->input->post('date_of_need'); 
$newDate = date("m-d-y",strtotime("+2 weeks")); 
$d = $this->input->post('dateavail'); 

當我贊同這3個日期，我想出了這一點：

Date Needed: 9/12/16 
Date to be Reserved: 9/24/16 
Date Today: 9/10/16 

我想有一個邏輯，這將使我無法保留一個產品如果它小於2周。我將如何做到這一點？ 這裏是我的邏輯

if($DateNeeded < $newDate){ 
    echo "You need to reserve 2 weeks ahead!"; 
} 

但它不是工作..謝謝你幫我

Answer 1

試試這個

$DateNeeded = strtotime($$DateNeeded); 
$newDate = date("m-d-y",strtotime("+2 weeks")); 
newDate_1 = strtotime($newDate); 

if($DateNeeded < $newDate){ 
    echo "You need to...." 
}