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Illegal string offset with float and int strings – SEO

I need to show on page some data from json_decode, but I receive an illegal offset error.

$json = '{"result":{"keyword":"seo",
                    "cost":0.54,
                    "concurrency":25,
                    "found_results":422000000,
                    "region_queries_count":1900,
                    "region_queries_count_wide":0,
                    "region_queries_count_phrase":0,
                    "types":["related_search","pic"],
                    "geo_names":[],
                    "social_domains":["wikipedia","linkedin"],
                    "right_spelling":null,
                    "keyword_length":1,
                    "lang":null,
                    "keyword_id":"647713",
                    "suggestions_count":12528,
                    "keywords_count":1637
                    },
          "status_msg":"OK",
          "status_code":200,
          "left_lines":99787
         }';
$obj = json_decode($json, true);
if (is_array($obj['result'])) {
foreach ($obj['result'] as $keywords) {

echo '<li>Keyword: "'.$keywords['keyword'].'", Adwords CPC: <b>'.$keywords['cost'].'</b> USD, Concurrency: <b>'.$keywords['concurrency'].'</b>, Results: <b>'.$keywords['found_results'].'</b>, Search Volume: <b>'.$keywords['region_queries_count'].'</b>.</li>'.PHP_EOL;
echo '</ol>';
 }
}    

var_dump($obj) return:
array(4) { ["result"]=> array(16) { ["keyword"]=> string(3) "seo" ["cost"]=> float(0.54) ["concurrency"]=> int(25) ["found_results"]=> int(422000000) ["region_queries_count"]=> int(1900) ["region_queries_count_wide"]=> int(0) ["region_queries_count_phrase"]=> int(0) ["types"]=> array(2) { [0]=> string(14) "related_search" [1]=> string(3) "pic" } ["geo_names"]=> array(0) { } ["social_domains"]=> array(2) { [0]=> string(9) "wikipedia" [1]=> string(8) "linkedin" } ["right_spelling"]=> NULL ["keyword_length"]=> int(1) ["lang"]=> NULL ["keyword_id"]=> string(6) "647713" ["suggestions_count"]=> int(12528) ["keywords_count"]=> int(1637) } ["status_msg"]=> string(2) "OK" ["status_code"]=> int(200) ["left_lines"]=> int(99791) }
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2

Answers


  1. 0

    You are iterating through the $obj['results'] array, but that is already the root element you want for your keywords. Just use this instead:

    $keywords = $obj['result'];
echo '<li>Keyword: "'.$keywords['keyword'].'", Adwords CPC: <b>'.$keywords['cost'].'</b> USD, Concurrency: <b>'.$keywords['concurrency'].'</b>, Results: <b>'.$keywords['found_results'].'</b>, Search Volume: <b>'.$keywords['region_queries_count'].'</b>.</li>'.PHP_EOL;
echo '</ol>';

    Output:

    <li>Keyword: "seo", Adwords CPC: <b>0.54</b> USD, Concurrency: <b>25</b>, Results: <b>422000000</b>, Search Volume: <b>1900</b>.</li> </ol>

    Demo on 3v4l.org

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  2. 0

    If there is the possibility of having multiple keywords, then this could be presented as an array of objects. Whereas a single keyword is presented by a standalone JSON object. To cope with both of these, this code will check if it is an array of objects, if it isn’t then it converts the single entry into an array so that both options can be processed using the same code…

    $obj = json_decode($json, true);
if (isset($obj['result'])) {
    // If not a numerically indexed array - convert it
    if ( !isset($obj['result'][0]))  {
        $obj['result'] = [$obj['result']];
    }
    foreach ($obj['result'] as $keywords) {
        echo '<li>Keyword: "'.$keywords['keyword'].'", Adwords CPC: <b>'.$keywords['cost'].'</b> USD, Concurrency: <b>'.$keywords['concurrency'].'</b>, Results: <b>'.$keywords['found_results'].'</b>, Search Volume: <b>'.$keywords['region_queries_count'].'</b>.</li>'.PHP_EOL;
        echo '</ol>';
    }
}
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