意外' - >'（T_OBJECT_OPERATOR），期待'，'或';'

嘗試從媒體中拾取第一個網址->返回的JSON中的媒體元數據。收到此錯誤：意外' - >'（T_OBJECT_OPERATOR），期待'，'或';'

Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR), expecting ',' or ';'

我的代碼：

foreach ($articles->results as $article){ 

    echo "<div class='story'> 
      <div class='photo'>"; 
    echo "<img src='" . $article->media->media-metadata->url[0] . "' />"; 
    echo "<h3>" . $article->title . "</h3>"; 
    echo "<p>" . $article->abstract . "</p>"; 
    echo "<hr />"; 
    echo "</div></div>"; 
}

例JSON：

object(stdClass)#20 (18) { 
["url"]=> string(82) "http://www.nytimes.com/2013/08/20/health/a-dry-pipeline-for-psychiatric-drugs.html" 
["adx_keywords"]=> string(91) "Drugs (Pharmaceuticals);Depression (Mental);Mental Health and Disorders;Medicine and Health" 
["column"]=> string(4) "Mind" 
["section"]=> string(6) "Health" 
["byline"]=> string(28) "By RICHARD A. FRIEDMAN, M.D." 
["type"]=> string(7) "Article" 
["title"]=> string(36) "A Dry Pipeline for Psychiatric Drugs" 
["abstract"]=> string(122) "With rare exceptions, it is hard to think of a single truly novel psychotropic drug that has emerged in the last 30 years." 
["published_date"]=> string(10) "2013-08-20" 
["source"]=> string(18) "The New York Times" 
["id"]=> string(15) "100000002395456" 
["asset_id"]=> float(1.00000002395E+14) 
["views"]=> int(2) 
["des_facet"]=> array(4) { 
    [0]=> string(23) "DRUGS (PHARMACEUTICALS)" 
    [1]=> string(19) "DEPRESSION (MENTAL)" [2]=> string(27) "MENTAL HEALTH AND DISORDERS" 
    [3]=> string(19) "MEDICINE AND HEALTH" } 
["org_facet"]=> string(0) "" 
["per_facet"]=> string(0) "" 
["geo_facet"]=> string(0) "" 
["media"]=> array(1) { 
    [0]=> object(stdClass)#21 (5) { 
     ["type"]=> string(5) "image" 
     ["subtype"]=> string(5) "photo" 
     ["caption"]=> string(0) "" 
     ["copyright"]=> string(12) "Yarek Waszul" 
     ["media-metadata"]=> array(7) { 
      [0]=> object(stdClass)#22 (4) { 
        ["url"]=> string(91) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-thumbStandard.jpg" 
        ["format"]=> string(18) "Standard Thumbnail" 
        ["height"]=> int(75) 
        ["width"]=> int(75) } 
      [1]=> object(stdClass)#23 (4) { 
        ["url"]=> string(91) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-articleInline.jpg" 
        ["format"]=> string(6) "Normal" 
        ["height"]=> int(127) 
        ["width"]=> int(190) } 
      [2]=> object(stdClass)#24 (4) { 
        ["url"]=> string(88) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-superJumbo.jpg" 
        ["format"]=> string(10) "superJumbo" 
        ["height"]=> int(1080) 
        ["width"]=> int(1620) } 
      [3]=> object(stdClass)#25 (4) { 
        ["url"]=> string(87) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-square640.jpg" 
        ["format"]=> string(9) "square640" 
        ["height"]=> int(640) 
        ["width"]=> int(640) } 
      [4]=> object(stdClass)#26 (4) { 
        ["url"]=> string(84) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-sfSpan.jpg" 
        ["format"]=> string(5) "Large" 
        ["height"]=> int(263) 
        ["width"]=> int(395) } 
      [5]=> object(stdClass)#27 (4) { 
        ["url"]=> string(87) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-square320.jpg" 
        ["format"]=> string(9) "square320" 
        ["height"]=> int(320) 
        ["width"]=> int(320) } 
      [6]=> object(stdClass)#28 (4) { 
        ["url"]=> string(88) "http://graphics8.nytimes.com/images/2013/08/20/science/20MIND_SPAN/20MIND-thumbLarge.jpg" 
        ["format"]=> string(10) "thumbLarge" 
        ["height"]=> int(150) 
        ["width"]=> int(150) 
      } 
     } 
     } 
    } 
}

讓我知道如果你需要更多的細節。

來源

2013-08-21 user2673468

你不能在對象屬性名稱破折號，所以media-metadata將無法正常工作的。更改爲以下內容，你應該是好去：

echo "<img src='" . $article->media->{'media-metadata'}->url[0] . "' />";

來源

2013-08-21 04:08:33 Divey

是，這是由於工作！ – user2673468

這

echo "<img src='" . $article->media->media-metadata->url[0] . "' />";

應該

echo "<img src='" . $article->media->{'media-metadata'}->url[0] . "' />";

來源

2013-08-21 04:07:38

有關'abstract'事情不是真的，你可以使用它的屬性名稱：http://codepad.org/XHGgtJKL –

意外' - >'（T_OBJECT_OPERATOR），期待'，'或';'

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