好的,所以twitter每日趋势列表有20个趋势。假设我想在列表中获得第7个趋势。这是我漫无边际的做法......
// We want the 7th item in the array
$trendArray = 7;
// Get an array (?) of the latest twitter trends
$jsonurl = "http://search.twitter.com/trends/daily.json";
$json = file_get_contents($jsonurl,0,null,null);
$json_output = json_decode($json);
$allTrends = $json_output->trends;
// Cycle through to the 7th in the list
foreach ( $json_output->trends as $trendslist ) {
foreach ( $trendslist as $trend ) {
$loop += 1;
if ($loop == $trendArray) {
$theTrend = $trend->name;
break;
}
}
break; // Exit after we've looped once
}
echo $theTrend;
我怀疑我混淆了对象和数组,但我确信有一种更简单的方法可以做到这一点,而不是那两个for / each循环,因为
$theTrend = $json_output->trends[6]->name;
给我这个错误:
Fatal error: Cannot use object of type stdClass as array
感谢您的帮助!
答案 0 :(得分:6)
$json_output = json_decode($json);
必须是:
$json_output = json_decode($json,true);
(你必须告诉json将stdClass转换为数组)