Question

我有一系列值，都包含一个单词，我希望能够找到首先在字符串中找到哪些值。

$materials = array("cotton","silk","polyester","denim","wool");
$string1 = "The fabric composition of this jacket is 100% cotton (body) and 65% polyester / 35% cotton (lining)";
$string2 = "The jeans are made from denim with cotton pockets";

所以对于$ string1，我希望它能说它找到了＆＃39; cotton＆＃39;首先作为材料和$ string2我希望它能说它找到了'牛仔布＆＃39;第一

你知道这样做的方法吗？我原本看着一个foreach循环，但它会按照数组的顺序排列，这意味着它也会带来棉花＆＃39;返回两个字符串，因为它是数组中的第一个字符串：

foreach ($materials as $material) {
    if (stripos($string1, $material) !== FALSE) {
        $product_material1 = $material;
        break;
    }
}

Answer 1

$materials = array("cotton","silk","polyester","denim","wool");
$string1 = "The fabric composition of this jacket is 100% cotton (body) and 65% polyester / 35% cotton (lining)";
$string2 = "The jeans are made from denim with cotton pockets";

$firstMatch = array_shift(array_intersect(str_word_count($string1, 1), $materials));
var_dump($firstMatch);

$firstMatch = array_shift(array_intersect(str_word_count($string2, 1), $materials));
var_dump($firstMatch);

如果没有匹配项，您将获得null

请注意，它区分大小写

Answer 2

我喜欢Mark Baker的解决方案，因为我喜欢一个衬垫，但这是另一个带有正则表达式和辅助函数的解决方案。

function findFirst($haystack, $needles) {
    if (preg_match('/'.implode('|', $needles).'/', $haystack, $matches)) {
        return $matches[0];
    }

    return null;
}

$first1 = findFirst($string1, $materials);
var_dump($first1);

$first2 = findFirst($string2, $materials);
var_dump($first2);

在字符串中查找第一次出现的数组值

2 个答案: