PHP - 如果找到密钥，则删除后续数组值

Question

$ week_link_arr

Array
(
    [0] => 1-4_1*Oct-2015
    [1] => 5-11_2*Oct-2015
    [2] => 12-18_3*Oct-2015
    [3] => 19-25_4*Oct-2015
    [4] => 26-31_5*Oct-2015
)

$ current_week_url

1-4_1*Oct-2015

尝试使用array_search获取密钥，并在未设置的情况下将其删除（如果找到）：

if (($key = array_search($current_week_url, $week_link_arr)) !== false) {
    unset($week_link_arr[$key]);
    }

输出

Array
(
    [1] => 5-11_2*Oct-2015
    [2] => 12-18_3*Oct-2015
    [3] => 19-25_4*Oct-2015
    [4] => 26-31_5*Oct-2015
)

这将删除找到的密钥。相反，如果找到key，我需要删除后续的数组元素。使用键1-4_1*Oct-2015

执行输出

Array
(
    [0] => 1-4_1*Oct-2015
)

如果密钥为5-11_2*Oct-2015，则

Array
(
    [0] => 1-4_1*Oct-2015
    [1] => 5-11_2*Oct-2015
)

Answer 1

你是说这个吗？

if (($key = array_search($current_week_url, $week_link_arr)) !== false) {
      $week_link_arr = array_slice($week_link_arr, 0, $key + 1);
}

Answer 2

在这种情况下，您的密钥是数组中的索引 因此，您只需删除此键与数组其余部分之间的键

即可

if (($key = array_search($current_week_url, $week_link_arr)) !== false) {
    array_splice($week_link_arr, $key, count($week_link_arr)-1);
}