首頁猿問如何從一個(gè)對(duì)象中讀取屬性，該對(duì)象是...

如何從一個(gè)對(duì)象中讀取屬性，該對(duì)象是另一個(gè)對(duì)象的屬性？

PHP

繁星點(diǎn)點(diǎn)滴滴 2022-07-22 18:36:00

stdClass Object([kind] => youtube#channelListResponse[etag] => "Fznwjl6JEQdo1MGvHOGaz_YanRU/AwtUznqL5IWQ_LGBo6hPktZlciI"[pageInfo] => stdClass Object ( [totalResults] => 1 [resultsPerPage] => 1 )[items] => Array ( [0] => stdClass Object ( [kind] => youtube#channel [etag] => "Fznwjl6JEQdo1MGvHOGaz_YanRU/89K2C_1kE4Ku8LvtzDJQlV5_e2I" [id] => UC-lHJZR3Gqxm24_Vd_AJ5Yw [snippet] => stdClass Object ( [title] => PewDiePie [description] => I make videos. [publishedAt] => 2010-04-29T10:54:00.000Z [thumbnails] => stdClass Object ( [default] => stdClass Object ( [url] => https://yt3.ggpht.com/a/AGF-l79FVckie4j9WT-4cEW6iu3gPd4GivQf_XNSWg=s88-c-k-c0xffffffff-no-rj-mo [width] => 88 [height] => 88 ) [medium] => stdClass Object ( [url] => https://yt3.ggpht.com/a/AGF-l79FVckie4j9WT-4cEW6iu3gPd4GivQf_XNSWg=s240-c-k-c0xffffffff-no-rj-mo [width] => 240 [height] => 240我怎樣才能得到（例如高stdClass對(duì)象的url）的值？我應(yīng)該先創(chuàng)建一個(gè)數(shù)組還是可以直接訪問這個(gè)值？我不知道如何從另一個(gè)對(duì)象中獲取作為屬性的對(duì)象的值。預(yù)先感謝！

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1 回答

慕運(yùn)維8079593

TA貢獻(xiàn)1876條經(jīng)驗(yàn) 獲得超5個(gè)贊

在你的情況下：

echo $myObject->items[0]->id; //Outputs UC-lHJZR3Gqxm24_Vd_AJ5Yw

//or

echo $myObject->items[0]->snippet->thumbnails->default->url; //Outputs: https://yt3.ggpht.com/a/AGF-l79FVckie4j9WT-4cEW6iu3gPd4GivQf_XNSWg=s88-c-k-c0xffffffff-no-rj-mo

對(duì)象屬性必須用箭頭 (->)引用，數(shù)組元素必須用括號(hào) ([])引用。 items是一個(gè)數(shù)組，正如您在輸出中看到的那樣。

在這個(gè)例子中，我items從主對(duì)象 ( $myObject) 中讀取，第一個(gè)索引來自 items 數(shù)組 (0)，然后是屬性id；

反對(duì) 回復(fù) 2022-07-22