Preg_match使用不同的单词组合 - Preg_match with different combinations of words

Preg_match with different combinations of words

本文关键字：单词组合 match Preg | 更新日期: 2023-09-26

我有一个关于preg_matches的小问题，这些正则表达式的东西真的很难理解，我希望有人能给正确的答案!

我有以下文本:

0A-24-423

但也可以是:

0A-242-2

或

0A-2-423

我如何使用preg_matches来过滤这些?我用的是

substr($something, 0,2)

以便它捕获0A和

substr($seat, 4,5)

这将捕获24，但当你得到242时，它不会捕获最后2....

希望有人可以帮助创建这个preg_match!

让它更清楚我现在有什么:

        foreach($_POST['seats'] AS $seat) {
        if ($count > 0) {
            $selectQuery .= " || ";
        }
        $selectQuery .= " ( rowId = '" . substr($seat, 0,2) . "'";
        $selectQuery .= " and `order` = " . substr($seat, 3,5) . "  ";
        $selectQuery .= " and columnId = " . substr($seat, 6) . " ) ";
        $count++;

和$seat有以下格式XXXXXX，使用substr我可以得到正确的东西(例如:0J3017)

应该这样做:

    $selectQuery = "SELECT * from seats where ";
    $count = 0;
$pattern = "I DON'T KNOW :( ";
    foreach($_POST['seats'] AS $seat) {
        if ($count > 0) {
            $selectQuery .= " || ";
        }
        preg_match($pattern, $seats, $matches);
        $selectQuery .= " ( rowId = '" . $matches[0] . "'";
        $selectQuery .= " and `order` = " . $matches[1] . "  ";
        $selectQuery .= " and columnId = " . $matches[2] . " ) ";
        $count++;

和$seats在文章的开头有解释(它的格式是XX-XXX-XXX

)

where the first 2 XX  are 0[A-Z] (yes the 0 is correct)
where the 3 first XXX are [0-9]
Where the last 3  XXX are [0-9]

编辑:有两种方法可以解决这个问题。

选项1:

$pattern = "/(.*)-(.*)-(.*)/";

看起来您不需要使用正则表达式。下面是使用explode()和list()的示例:

list($row_id, $order, $column_id) = explode('-', $seat, 3);

然后您可以在$selectQuery中使用这三个新变量。

编辑:由于OP已经将他的要求作为对我的回答的评论，我已经相应地更新了我的回答。

你可以试试:

$pattern = "/[A-Z'd]{1,2}-[A-Z'd]{1,3}-[A-Z'd]{1,3}/";
$matched = preg_match($pattern, $something);
if ($matched === 0) {
  die('regex did not match');
}

$matched将为匹配的字符串提供1，如果不匹配则提供0。