从Cookie数组中删除值

Question

我正在尝试从Cookie数组中删除一个值：-

  if (!empty($_GET['job_unfav'])) {

        $value_to_delete = $_GET['job_fav']; // Cookie value to delete from array
        $favouriteIDs = explode('|', $_COOKIE['job_fav']);

        var_dump($favouriteIDs);
        unset($favouriteIDs[$value_to_delete]);

        $favouriteIDs = array_values($favouriteIDs);

        setcookie('job_fav', implode('|', $favouriteIDs));

    }

$favouriteIDs返回：-

array(90) { 
      [0]=> string(3) "542" 
      [1]=> string(0) "" 
      [2]=> string(3) "538" 
      [3]=> string(0) "" 
      [4]=> string(3) "534" 
      [5]=> string(0) "" 
      [6]=> string(3) "524" 
      [7]=> string(0) "" 
      [8]=> string(3) "516" 
      [9]=> string(9) "undefined" 
      [10]=> string(9) "undefined" 
      [11]=> string(9) "undefined" 
      [12]=> string(3) "468" 
      [13]=> string(0) "" 
      [14]=> string(0) "" 
      [15]=> string(0) "" [16]=> string(0) "" [17]=> string(0) "" [18]=> string(0) "" [19]=> string(0) "" [20]=> string(0) "" [21]=> string(0) "" [22]=> string(3) "468" [23]=> string(0) "" [24]=> string(3) "235" [25]=> string(3) "231" [26]=> string(0) "" [27]=> string(0) "" [28]=> string(0) "" [29]=> string(3) "235" [30]=> string(3) "231" [31]=> string(3) "228" [32]=> string(0) "" [33]=> string(0) "" [34]=> string(0) "" [35]=> string(0) "" [36]=> string(3) "235" [37]=> string(3) "231" [38]=> string(0) "" [39]=> string(0) "" [40]=> string(0) "" [41]=> string(3) "231" [42]=> string(3) "228" [43]=> string(3) "225" [44]=> string(0) "" [45]=> string(0) "" [46]=> string(0) "" [47]=> string(0) "" [48]=> string(3) "235" [49]=> string(0) "" [50]=> string(0) "" [51]=> string(0) "" [52]=> string(0) "" [53]=> string(0) "" [54]=> string(0) "" [55]=> string(3) "235" [56]=> string(3) "235" [57]=> string(0) "" [58]=> string(3) "235" [59]=> string(0) "" [60]=> string(0) "" [61]=> string(3) "235" [62]=> string(0) "" [63]=> string(0) "" [64]=> string(0) "" [65]=> string(9) "undefined" [66]=> string(0) "" [67]=> string(9) "undefined" [68]=> string(0) "" [69]=> string(3) "502" [70]=> string(0) "" [71]=> string(0) "" [72]=> string(0) "" [73]=> string(0) "" [74]=> string(0) "" [75]=> string(0) "" [76]=> string(0) "" [77]=> string(0) "" [78]=> string(0) "" [79]=> string(0) "" [80]=> string(0) "" [81]=> string(0) "" [82]=> string(0) "" [83]=> string(0) "" [84]=> string(0) "" [85]=> string(0) "" [86]=> string(0) "" [87]=> string(0) "" [88]=> string(0) "" [89]=> string(3) "514" }

目前这还没有删除任何内容，您知道如何执行此操作吗？

即我想从job_fav cookie中删除所有出现的“ 542”，但保留所有其他值

Answer 1

这是使用array_search()函数的简单方法。

<?php
$favoriteIds = array("542", "","538", "", "534", "", "524" );

$value_to_delete = '542';    //$_GET['job_fav']

$idx = array_search($value_to_delete, $favoriteIds);

if ( $idx !== FALSE ) {
    //if the value was found
    unset($favoriteIds[$idx]);
}

print_r($favoriteIds);

结果将是

Array
(
    [1] =>
    [2] => 538
    [3] =>
    [4] => 534
    [5] =>
    [6] => 524
)

Answer 2

在代码中，从数组中正确删除所需的值。

但是，为了覆盖您已经拥有的cookie（因此通过交换cookie实际上删除了您删除的值），您需要向您进行的setcookie php函数调用添加更多参数：

从文档 ：

bool setcookie（字符串$ name [，字符串$ value [，整数$ expire = 0 [，字符串$ 路径 [，字符串$ domain [，布尔$ secure =假[，布尔$ httponly =假]]]]]]]））

确保参数：

路径

域

等于您已经拥有的cookie，否则您将创建另一个cookie，否则setcookie将被忽略。

然后必须使用当前时间戳设置expire字段（ 如果cookie没有过期则可以保留为0 ），您可以使用time（）函数加上希望cookie处于活动状态的秒数：

$ expire = time（）+ NUMBER_OF_SECONDS

我希望这有帮助。