$ch = curl_init();
//$keyword='hello';
$url = 'http://apis.baidu.com/apistore/tranlateservice/dictionary?query=hello&from=en&to=zh';
$header = array(
'apikey: 这里是我的apikey,我没有写',
);
// 添加apikey到header
curl_setopt($ch, CURLOPT_HTTPHEADER , $header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// 执行HTTP请求
curl_setopt($ch , CURLOPT_URL , $url);
$res = curl_exec($ch);
curl_close($ch);
var_dump(json_decode($res));
<?php
$ch = curl_init();
$url = 'http://apis.baidu.com/baidu_openkg/zici_kg/zici_kg';
$header = array(
'Content-Type:application/x-www-form-urlencoded',
'apikey: a32f233654d52b869c0e96dd6b3e2db7',
);
$data = '{"query": "喜欢近义词", "resource": "zici"}';
// 添加apikey到header
curl_setopt($ch, CURLOPT_HTTPHEADER , $header);
// 添加参数
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// 执行HTTP请求
curl_setopt($ch , CURLOPT_URL , $url);
$res = curl_exec($ch);
$var = json_decode($res, true);
print_r($var);
?>
因为百度返回给你的结果就是空, 下图为 百度百度提供的调试工具 得到的结果, 和你提供的代码所获得到的结果是一样的.