多维数组中的PHP字符串搜索答案

【问题标题】：PHP string search in multidimensional array多维数组中的PHP字符串搜索
【发布时间】：2018-02-20 15:11:48
【问题描述】：

我刚刚开始研究与 Pinterest 相关的 PHP（PHP 新手）编码。我坚持对多维数组进行字符串搜索。我做了很多研究并尝试了不同的方法，但在针对多维数组的字符串搜索方面找不到太多帮助。

具体来说，我已经从这篇文章中尝试了递归数组搜索：in_array() and multidimensional array，但它对我不起作用。也许我做错了什么，这就是为什么我在这里寻求一些 PHP 专家的帮助。

当我对我的多维数组（在下面提到）运行它时，我每次都能找到答案，而我指定的字符串无关紧要。

例如：如果我运行下面的代码，它说找到，虽然它应该说没有找到，因为我的多维数组中有 Irix 字。

echo in_array_r("Irix", $info) ? 'found' : 'not found';

下面是我的多维数组：

$info = array
(
    "origin_pinner" => null,
    "domain" => "teacherspayteachers.com",
    "done_by_me" => null,
    "videos" => null,
    "tracking_params" => "CwABAAAADDk0NzI0ODYzODc2OAA",
    "aggregated_pin_data" => array
        (
            "comment_count" => 0,
            "did_it_data" => array
                (
                    "recommend_scores" => array
                        (
                            "0" => array
                                (
                                    "count" => 0,
                                    "score" => 1,
                                ),
                            "1" => array
                                (
                                    "count" => 0,
                                    "score" => 0.5,
                                ),
                            "2" => array
                                (
                                    "count" => 0,
                                    "score" => 0,
                                ),
                        ),
                    "rating" => -1,
                    "user_count" => 1,
                    "tags" => array
                        (
                        ),
                    "images_count" => 1,
                    "recommended_count" => 1,
                    "details_count" => 1,
                    "type" => "aggregateddiditdata",
                ),
            "id" => 4894650307138568743,
            "is_shop_the_look" => null,
            "aggregated_stats" => array
                (
                    "saves" => 13580,
                    "done" => 1,
                ),
        ),
    "hashtags" => array
        (
        ),
    "like_count" => 0,
    "images" => array
        (
            "736x" => array
                (
                    "url" => "https://i.pinimg.com/736x/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 736,
                    "height" => 1380,
                ),
            "60x60" => array
                (
                    "url" => "https://i.pinimg.com/60x60/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 60,
                    "height" => 60,
                ),
            "474x" => array
                (
                    "url" => "https://i.pinimg.com/474x/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 474,
                    "height" => 888,
                ),
            "170x" => array
                (
                    "url" => "https://i.pinimg.com/170x/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 170,
                    "height" => 318,
                ),
            "600x315" => array
                (
                    "url" => "https://s-media-cache-ak0.pinimg.com/600x315/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 600,
                    "height" => 315,
                ),
            "564x" => array
                (
                    "url" => "https://i.pinimg.com/564x/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 564,
                    "height" => 1057,
                ),
            "236x" => array
                (
                    "url" => "https://i.pinimg.com/236x/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 236,
                    "height" => 442,
                ),
            "136x136" => array
                (
                    "url" => "https://i.pinimg.com/136x136/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.jpg",
                    "width" => 136,
                    "height" => 136,
                ),
            "orig" => array
                (
                    "url" => "https://s-media-cache-ak0.pinimg.com/originals/6c/a8/8e/6ca88ebc09648b14a88b125144993ef3.png",
                    "width" => 768,
                    "height" => 1440,
                ),
        ),
    "id" => "AdJy70aUUiIeIp2s5VM5ulcoVr6xDsV_ff3K0oJCVQr-MoRBPMbAVRE",
    "closeup_user_note" => "FREE Teaching Resource   Editable Novel Brochure on Google Classroom that students can edit for any novel!",
    "category" => "education",
    "price_currency" => "USD",
    "is_promoted" => null,
    "description_html" => "FREE Teaching Resource   Editable Novel Brochure on Google Classroom that students can edit for any novel!",
    "per_pin_analytics" => array
        (
            "id" => "<Pin 448671181617679376>",
        ),
    "section" => null,
    "buyable_product" => null,
    "access" => array
        (
        ),
    "is_promotable" => null,
    "comment_count" => 1,
    "board" => array
        (
            "category" => null,
            "is_collaborative" => null,
            "layout" => "default",
            "description" => null,
            "privacy" => "public",
            "url" => "/rhythmsandtwine/novel-studies/",
            "image_cover_url" => "https://s-media-cache-ak0.pinimg.com/200x150/17/3a/ab/173aab4ddb8d48f4d50002c1f95f6d22.jpg",
            "pin_thumbnail_urls" => array
                (
                    "0" => "https://s-media-cache-ak0.pinimg.com/150x150/d8/a3/34/d8a334af515fab7e5f73a15e5244f8ac.jpg",
                    "1" => "https://s-media-cache-ak0.pinimg.com/150x150/3f/4c/50/3f4c50eded7a107b4a49dea3c58a7848.jpg",
                    "2" => "https://s-media-cache-ak0.pinimg.com/150x150/04/67/ee/0467eead4aba47f47bb910a48cd1afdd.jpg",
                    "3" => "https://s-media-cache-ak0.pinimg.com/150x150/8f/90/af/8f90afe949fa0ef24d6a5a9bc85d2537.jpg",
                    "4" => "https://s-media-cache-ak0.pinimg.com/150x150/bf/ff/a5/bfffa5392c1f7c2317cd3e1cf2aa9920.jpg",
                ),
            "image_thumbnail_url" => "https://s-media-cache-ak0.pinimg.com/upload/448671250316290197_board_thumbnail_2017-12-27-08-38-39_92111_60.jpg",
            "access" => array
                (
                ),
            "collaborated_by_me" => null,
            "owner" => array
                (
                    "id" => 448671319035224306,
                ),
            "map_id" => "pinterest.ijz1714i",
            "followed_by_me" => null,
            "type" => "board",
            "id" => "448671250316290197",
            "name" => "Novel Studies",
        ),
    "link_domain" => array
        (
            "official_user" => null,
        ),
    "type" => "pin",
    "method" => "uploaded",
    "image_signature" => "6ca88ebc09648b14a88b125144993ef3",
    "attribution" => null,
    "description" => "FREE Teaching Resource   Editable Novel Brochure on Google Classroom that students can edit for any novel!",
    "price_value" => 0,
    "liked_by_me" => null,
    "show_personalize_field" => null,
    "title" => null,
    "native_creator" => null,
    "is_playable" => null,
    "rich_metadata" => array
        (
            "site_name" => "Teachers Pay Teachers",
            "description" => "Novel Brochure - Pamphlet for Google Classroom Freebie! This resource allows students to create a pamphlet that can be edited for ANY novel! The file contains a Google Drive link that can be used for Google Classroom. **Be sure to MAKE A COPY of the link and save to your",
            "link_status" => 0,
            "title" => "Novel Brochure Google Classroom Freebie",
            "locale" => "en",
            "has_price_drop" => null,
            "amp_url" => null,
            "id" => "301b4d97d46163d2c9e3b22de2f0a345",
            "url" => "https://www.teacherspayteachers.com/Product/Novel-Brochure-Google-Classroom-Freebie-3104649",
            "tracker" => null,
            "apple_touch_icon_link" => "https://s-media-cache-ak0.pinimg.com/favicons/e102b188545e64e45a326583a64a6bc332be2df9228a3f99685af702.png?155fe47b3e0bb98f4d90a12033216561",
            "favicon_images" => array
                (
                    "50x" => "https://s-media-cache-ak0.pinimg.com/favicons/50x/b95b678fa3287d329190f918cefbbac4a5a3e65a0212bc32f9e2c363.png?3eb3040f733c42a12569d94d396a07a4",
                    "orig" => "https://s-media-cache-ak0.pinimg.com/favicons/b95b678fa3287d329190f918cefbbac4a5a3e65a0212bc32f9e2c363.ico?3eb3040f733c42a12569d94d396a07a4",
                ),
            "type" => "richpindataview",
            "amp_valid" => null,
            "apple_touch_icon_images" => array
                (
                    "50x" => "https://s-media-cache-ak0.pinimg.com/favicons/50x/318e68afb755008848f5ec59beac068e50c4696d4f11e51552cd2271.png?d99a7f242e13fff1cd16b9b5de22ec0b",
                    "orig" => "https://s-media-cache-ak0.pinimg.com/favicons/318e68afb755008848f5ec59beac068e50c4696d4f11e51552cd2271.png?d99a7f242e13fff1cd16b9b5de22ec0b",
                ),
            "favicon_link" => "https://s-media-cache-ak0.pinimg.com/favicons/09f765214b80be5f5198899864e6996540ed8a4e54fee82ce58fd606.ico?fbf2fa4d283a37a435dde24f48537e7d",
        ),
    "via_pinner" => array
        (
            "username" => "dezi4462",
            "first_name" => "Dezi",
            "domain_url" => null,
            "twitter_url" => null,
            "domain_verified" => null,
            "image_medium_url" => "https://i.pinimg.com/75x75_RS/f2/61/06/f261063238cc0672f1eb586352660452.jpg",
            "explicitly_followed_by_me" => null,
            "is_default_image" => null,
            "location" => null,
            "full_name" => "Dezi Martinez",
            "indexed" => null,
            "verified_identity" => array
                (
                ),
            "image_small_url" => "https://i.pinimg.com/30x30_RS/f2/61/06/f261063238cc0672f1eb586352660452.jpg",
            "followed_by_me" => null,
            "type" => "user",
            "id" => "375417456346283592",
        ),
    "link" => "https://www.teacherspayteachers.com/Product/Novel-Brochure-Google-Classroom-Freebie-3104649",
    "has_required_attribution_provider" => null,
    "is_repin" => 1,
    "rich_recipe_top_ingredients" => array
        (
        ),
    "buyable_product_availability" => null,
    "pinner" => array
        (
            "username" => "rhythmsandtwine",
            "first_name" => "Jennifer",
            "domain_url" => null,
            "twitter_url" => null,
            "domain_verified" => null,
            "image_medium_url" => "https://i.pinimg.com/75x75_RS/ae/c0/ac/aec0acd834181d845ee39e437dbd939c.jpg",
            "explicitly_followed_by_me" => null,
            "is_default_image" => null,
            "location" => null,
            "full_name" => "Jennifer Forbes",
            "indexed" => null,
            "verified_identity" => array
                (
                ),
            "image_small_url" => "https://i.pinimg.com/30x30_RS/ae/c0/ac/aec0acd834181d845ee39e437dbd939c.jpg",
            "followed_by_me" => null,
            "type" => "user",
            "id" => 448671319035224306,
        ),
    "repin_count" => 354,
    "tracked_link" => "https://www.teacherspayteachers.com/Product/Novel-Brochure-Google-Classroom-Freebie-3104649",
    "created_at" => "Fri, 09 Jun 2017 23:54:29 +0000",
    "is_native" => null,
    "native_pin_stats" => null,
    "promoter" => null,
    "pin360" => null,
    "privacy" => "public",
    "dominant_color" => "#859886",
    "promoted_is_removable" => null,
    "embed" => null,
    "is_quick_promotable" => null,
    "is_video" => null,
    "closeup_description" => null
);

【问题讨论】：

in_array() 不适用于多维数组
in_array() and multidimensional array的可能重复
@D.'s 他实际上正在使用相关问题的确切功能，但写道不起作用
@Paolo 我认为他应该尝试所有答案并告诉我们它们是否有效。他尝试了 8 年前的答案
@D.'s 他实际上尝试了接受答案的功能，得分为 399（在撰写本文时）

标签： php arrays string multidimensional-array string-search

【解决方案1】：

您得到的结果是由于 PHP 的类型在对不同类型的值进行弱比较时进行了杂耍。

试试这个，例如：

$x = ('Irix' == 0 );
var_export( $x );

你得到TRUE！

为什么？

'Irix'转换成int，转换后是0所以和0比较为真。

在您的数组中，您有几个值设置为 0，这就是显然找到 Irix 的原因。

调用函数时应该使用strict比较：

function in_array_r($needle, $haystack, $strict = false) {
    foreach ($haystack as $item) {
        if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
            return true;
        }
    }

    return false;
}

如果您需要使用弱比较（例如，为了匹配123 == '123'），您可以调整函数以在进行弱比较时将数字转换为字符串：

function in_array_r($needle, $haystack, $strict = false) {
    foreach ($haystack as $item) {
        // cast $item to string if numeric when doing weak comparison
        if( ! $strict && is_string( $needle ) && ( is_float( $item ) || is_int( $item ) ) ) {
            $item = (string)$item;
        }
        // ----------------------------------------------------------

        if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
            return true;
        }
    }

    return false;
}

最后，如果您也需要评估真正的子字符串匹配（例如，将"example" 查找到字符串"this is a example"），函数如下：

function in_array_r($needle, $haystack, $strict = false) {
    foreach ($haystack as $item) {
        // cast $item to string if numeric when doing weak comparison
        if( ! $strict && is_string( $needle ) && ( is_float( $item ) || is_int( $item ) ) ) {
            $item = (string)$item;
        }
        // ----------------------------------------------------------

        // Substring search
        if( is_string( $needle ) && is_string( $item ) && strpos( $item, $needle ) !== false ) {
            return true;
        }
        // ----------------

        if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
            return true;
        }
    }

    return false;
}

比赛演示代码可用here

【讨论】：

嗨@Paolo，非常感谢您的回答。从严格的比较来看，您的意思是在函数中将 $strict 设置为 true 还是使用 === 而不是 ==？我尝试设置 $strict = true 然后函数每次都返回 not found ，即使在搜索数组中的 Google 时也是如此。我也尝试了你们两个建议的功能，仍然得到相同的结果。
@LT 严格比较 === 要求值的类型相同：例如。 123 === "123" 评估 false 因为左项是一个数字，而右项是一个字符串。 --- 你没有找到"Google"，因为你没有值"Google"。您有包含 Google 之类的值，例如 "Visit Google" 但"Google" == "Visit Google" 评估 false。它们是两个完全不同的 srings。--- 你需要做子字符串吗搜索？
@LT- 我添加了一个版本的函数，它可以在你需要的情况下进行子字符串搜索
是的，我正在寻找是否可以在数组中的任何值中包含 google。因为在数组中我有`[rich_metadata] => Array（[site_name] => Teachers Pay Teachers [description] => Novel Brochure - Pamphlet for Google`里面有google这个词，我想确保函数返回true .
我已经尝试了第二个例子：// ---------------------------------------------------------- 987654348 if( is_string( $needle ) && is_string( $item ) && strpos( $item, $needle ) !== false ) { 987654350 } 987654352 if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) { 987654354 } 987654356 return false; 987654358 @