Why the curl return null？

Question

I want to get the yahoo woeid by php script.

I can access the url 'http://query.yahooapis.com/v1/public/yql?q=select * from geo.places where text="NewYork"&format=json' and get the json file in my browser.But when I use the curl it return null.

that's the code.

    public function getwoeid(){
        $ch = curl_init();
        $url = 'http://query.yahooapis.com/v1/public/yql?q=select * from geo.places where text="'.$this->cityname.'"&format=json';
        //echo $url;
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $data=curl_exec($ch) or die($this->returnerror()); 
        curl_close($ch);
        $array = json_decode($data, true);
        return $array;
    }

when I try to access the 'http://query.yahooapis.com/v1/public/yql?q=select * from geo.places where text="上海"&format=json' the curl works fine.

I can't fix it.

any suggestion would be appreciated! Thanks.

$data=curl_exec($ch) or die($this->returnerror()); Die function will execute even if curl_exec return blank response so better use this, if($data === false) { die($this->returnerror()); } — Tarun
– Tarun, Commented Aug 31, 2012 at 9:07
sorry I forget to delete the line. I should delete the line.I'm trying to modify the code. — joe
– joe, Commented Aug 31, 2012 at 9:22

Matoha · Accepted Answer · 2012-08-31 09:21:19Z

3

You can just use PHP's file_get_contents(). The spaces must be encoded by urlencode();

$url = 'http://query.yahooapis.com/v1/public/yql?q=select * from geo.places where text="'.$this->cityname.'"&format=json';
$data = file_get_contents(urlencode($url));
$array = json_decode($data, true);

answered Aug 31, 2012 at 9:21

Matoha

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Comments

Oyeme · Accepted Answer · 2012-08-31 09:14:08Z

0

Just got answer from your code:

string 'HTTP Version Not Supported

�' (length=210)

The PlaceFinder Web service supports only the HTTP GET method. Other HTTP methods are not supported.

You cannot use CURL,because curl works as a POST method. Please read here: http://developer.yahoo.com/geo/placefinder/guide/requests.html

answered Aug 31, 2012 at 9:14

Oyeme

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5 Comments

Jurgo Over a year ago

actualy you can use cURL to make GET requests.

Oyeme Over a year ago

Yes,you are right,by default it's a post method.Better to use file_get_contents() for it.

joe Over a year ago

but why I can get the json by curl for this url 'query.yahooapis.com/v1/public/yql?q=select * from geo.places where text="Shanghai"&format=json'

Oyeme Over a year ago

@joe u can,u should use GET metod instead of post.

joe Over a year ago

I've fix it.actually I don't know the reason! public function getwoeid(){ $defaults = array( CURLOPT_URL => 'query.yahooapis.com/v1/public/yql?'. http_build_query(array('q'=>'select * from geo.places where text="'.$this->cityname.'"','format'=>'json')), CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => TRUE ); $ch = curl_init(); curl_setopt_array($ch, $defaults); if( ! $result = curl_exec($ch)) { $this->returnerror(); } curl_close($ch); $array = json_decode($result, true); return $array; }

Mic1780 · Accepted Answer · 2012-08-31 09:16:09Z

0

You have an open curl_setopt(). it is below:

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_ <------

answered Aug 31, 2012 at 9:16

Mic1780

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1 Comment

joe Over a year ago

I forget to delete the line.it should be deleted.

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