将array_key_exists与preg_match一起使用

Question

我正在尝试确定基于模式的数组中是否存在匹配或匹配,

数组的一个例子:

Array
(
    [author_id] => 1
    [channel_id] => 1
    [site_id] => 1
    [entry_id] => 6
    [url_title] => test_title_with_file2
    [title] => Test Title with file
    [field_id_1_directory] => 1
    [field_id_4_directory] => 1
    [submit] => Submit
    [entry_date] => 1278219110
)

我想确定field_id_x_directory键或键存在,如果它们存在,则遍历每个键并运行一个将'x'用作变量的函数.

非常感谢,

伊恩.

Answer 1

foreach (array_keys($arr) as $k) {
    if (preg_match('/^field_id_(\\d+)_directory$/', $k, $matches)) {
        //do sth with $arr[$k] and $matches[1]
    }
}