Question

我正在尝试从cookie数组中删除一个值： -

$favouriteIDs

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" }返回： -

job_fav

目前还没有删除任何内容，知道怎么做？

即。我想删除所有出现的“542＆＃39;来自$("input").keypress(function(e) { if ( event.which == 13 ) { event.preventDefault(); } }); Cookie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

在您的代码中，您可以从阵列中正确删除所需的值。

但是，为了覆盖你已经拥有的cookie（所以删除的值实际上是通过交换cookie删除的）你需要在你做的setcookie php函数调用中添加更多参数：

来自docs：

bool setcookie（string $ name [，string $ value [，int $ expire = 0 [，string $ 路径 [，字符串$ 域 [，bool $ secure = false [，bool $ httponly = false]]]]]]）

确保参数：

<强>路径

<强>域

等于你已经拥有的cookie，否则你只会创建另一个或者setcookie将被忽略。

然后 expire 字段（如果cookie未过期可以保留为0 ）必须使用当前时间戳设置，您可以使用{{ 3}} function plus，你希望cookie活动的秒数：

$ expire = time（）+ NUMBER_OF_SECONDS

我希望这会有所帮助。

从cookie数组中删除值

2 个答案: