在谷歌搜索一段时间后，我发现我可以使用此代码进行谷歌搜索：
$text=$_GET['text'];
$results=file_get_contents("http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=" . $text);
// Too lazy to use cURL
$results=json_decode($results);
问题是$results实际上是object(stdClass)，并且像处理数组一样处理它不起作用（即$results["responseData"]）。这是完整的var_dump：
object(stdClass)#1 (3) {
["responseData"]=>
object(stdClass)#2 (2) {
["results"]=>
array(4) {
[0]=>
object(stdClass)#3 (8) {
["GsearchResultClass"]=>
string(10) "GwebSearch"
["unescapedUrl"]=>
string(51) "http://www.urbandictionary.com/define.php?term=lulz"
["url"]=>
string(55) "http://www.urbandictionary.com/define.php%3Fterm%3Dlulz"
["visibleUrl"]=>
string(23) "www.urbandictionary.com"
["cacheUrl"]=>
string(73) "http://www.google.com/search?q=cache:9eN_paaTATEJ:www.urbandictionary.com"
["title"]=>
string(29) "Urban Dictionary: <b>lulz</b>"
["titleNoFormatting"]=>
string(22) "Urban Dictionary: lulz"
["content"]=>
string(159) "Beginning as a plural variant of lol, <b>Lulz</b> was originally an exclamation but is now often used as a noun meaning interesting or funny internet cont..."
}
[1]=>
object(stdClass)#4 (8) {
["GsearchResultClass"]=>
string(10) "GwebSearch"
["unescapedUrl"]=>
string(34) "http://en.wiktionary.org/wiki/lulz"
["url"]=>
string(34) "http://en.wiktionary.org/wiki/lulz"
["visibleUrl"]=>
string(17) "en.wiktionary.org"
["cacheUrl"]=>
string(67) "http://www.google.com/search?q=cache:ksdO4S_AefUJ:en.wiktionary.org"
["title"]=>
string(24) "<b>lulz</b> - Wiktionary"
["titleNoFormatting"]=>
string(17) "lulz - Wiktionary"
["content"]=>
string(173) "Like “Hakuna matata†in The Lion King, “<b>lulz</b>†is not just a word, but a philosophy. [...] Anonymous has made campaigning sexy for the first time since 1968."
}
[2]=>
object(stdClass)#5 (8) {
["GsearchResultClass"]=>
string(10) "GwebSearch"
["unescapedUrl"]=>
string(51) "http://knowyourmeme.com/memes/i-did-it-for-the-lulz"
["url"]=>
string(51) "http://knowyourmeme.com/memes/i-did-it-for-the-lulz"
["visibleUrl"]=>
string(16) "knowyourmeme.com"
["cacheUrl"]=>
string(66) "http://www.google.com/search?q=cache:ITVRlkQkfckJ:knowyourmeme.com"
["title"]=>
string(45) "I Did It for the <b>Lulz</b> | Know Your Meme"
["titleNoFormatting"]=>
string(38) "I Did It for the Lulz | Know Your Meme"
["content"]=>
string(173) "About I Did it for the <b>Lulz</b> (also known as 4 the <b>lulz</b>) is a popular catchphrase used to express that one carried out a specific action for the sake of perso."
}
[3]=>
object(stdClass)#6 (8) {
["GsearchResultClass"]=>
string(10) "GwebSearch"
["unescapedUrl"]=>
string(56) "http://www.internetslang.com/LULZ-meaning-definition.asp"
["url"]=>
string(56) "http://www.internetslang.com/LULZ-meaning-definition.asp"
["visibleUrl"]=>
string(21) "www.internetslang.com"
["cacheUrl"]=>
string(71) "http://www.google.com/search?q=cache:UNXME3GmS-AJ:www.internetslang.com"
["title"]=>
string(88) "What does <b>LULZ</b> mean? - <b>LULZ</b> Definition - Meaning of <b>LULZ</b> <b>...</b>"
["titleNoFormatting"]=>
string(60) "What does LULZ mean? - LULZ Definition - Meaning of LULZ ..."
["content"]=>
string(185) "This Internet Slang page is designed to explain what the meaning of <b>LULZ</b> is. The slang word / acronym / abbreviation <b>LULZ</b> means... . Internet Slang. A list of <b>...</b>"
}
}
["cursor"]=>
object(stdClass)#7 (6) {
["resultCount"]=>
string(9) "1,080,000"
["pages"]=>
array(8) {
[0]=>
object(stdClass)#8 (2) {
["start"]=>
string(1) "0"
["label"]=>
int(1)
}
[1]=>
object(stdClass)#9 (2) {
["start"]=>
string(1) "4"
["label"]=>
int(2)
}
[2]=>
object(stdClass)#10 (2) {
["start"]=>
string(1) "8"
["label"]=>
int(3)
}
[3]=>
object(stdClass)#11 (2) {
["start"]=>
string(2) "12"
["label"]=>
int(4)
}
[4]=>
object(stdClass)#12 (2) {
["start"]=>
string(2) "16"
["label"]=>
int(5)
}
[5]=>
object(stdClass)#13 (2) {
["start"]=>
string(2) "20"
["label"]=>
int(6)
}
[6]=>
object(stdClass)#14 (2) {
["start"]=>
string(2) "24"
["label"]=>
int(7)
}
[7]=>
object(stdClass)#15 (2) {
["start"]=>
string(2) "28"
["label"]=>
int(8)
}
}
["estimatedResultCount"]=>
string(7) "1080000"
["currentPageIndex"]=>
int(0)
["moreResultsUrl"]=>
string(76) "http://www.google.com/search?oe=utf8&ie=utf8&source=uds&start=0&hl=en&q=lulz"
["searchResultTime"]=>
string(4) "0.23"
}
}
["responseDetails"]=>
NULL
["responseStatus"]=>
int(200)
}
那么，关于如何读取结果数组的任何线索？ （除了$results["responseData"]之外没有尝试过，因为我之前从未使用过JSON。）
答案 0 :(得分：8)
使用箭头操作符访问对象的数据：
$results->responseData;
或者，如果您更喜欢数组，可以使用json_decode的第二个参数将json数据作为数组返回，例如：
$results = json_decode($results, true);
通常，您还可以使用以下方法将任何对象强制转换为数组：
$results = (array) $results;
使用上述任何一种方法，您都可以使用PHP数组键语法访问数据：
$results['responseData'];
答案 1 :(得分：2)
要获得responseData，您必须使用$results->responseData，因为$results是对象。如果您有对象，则可以使用->访问其属性。
P.S。 responseData也是对象，因此如果您需要访问results，则必须使用$results->responseData->results等等...