如何使用＆传递curl中的数组？

Question

I made one curl call function it's like below:

public function curl($url, $post = array()){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.12) Gecko/20070508 Firefox/1.5.0.12");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $this->ckfile);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $this->ckfile);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    // curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,2);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
    curl_setopt($ch,CURLOPT_URL, $url);
    if(!empty($post)){
        $post_string = "";
        foreach($post as $key=>$value) { $post_string .= $key.'='.urlencode($value).'&'; }
        rtrim($post_string, '&');
        curl_setopt($ch,CURLOPT_POST, count($post));
        curl_setopt($ch,CURLOPT_POSTFIELDS, $post_string);
    }
    $res = curl_exec($ch);
    if (curl_errno($ch)) {
        $this->deliver_responce('201','Couldn\'t send request: ' . curl_error($ch));exit();
    }
    else {
        $resultStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if ($resultStatus == 200) {
            //echo "Post Successfully!";
            return true;
        }
        else{
            $this->deliver_responce('200','Request failed: HTTP status code: ' . $resultStatus);exit();
        }
    }
}

I have to call it with URL and array that I want to post. It's working when the array has key and value but not working when I have nested array. It's working for:

array(
    'id'=>1,
    'name'=>'apple'
)

but not working for

array(
    'id'=>5,
    'cmd'=>array('password','encrypt','decrypt')
)

I think problem is at:

foreach($post as $key=>$value) { $post_string .= $key.'='.urlencode($value).'&'; }

In my function but I don't know how to do it.

Answer 1

To create a request uri there's a http_build_query function:

if (!empty($post)) {
    curl_setopt($ch,CURLOPT_POST, true);
    curl_setopt($ch,CURLOPT_POSTFIELDS, http_build_query($post));
}

However, according to manual (emphasized by me):

This parameter can either be passed as a urlencoded string like 'para1=val1&para2=val2&...' or as an array with the field name as key and field data as value.

So, you can try to pass $post array directly, without transforming it to string.

Answer 2

For this kind of post data you should use JSON data , and parse json on server side. But if you dont have control over url to which you are sending data you can send nested array using following lines. no need to convert array inyo string manuallly.

curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-type: multipart/form-data"));

curl_setopt($ch, CURLOPT_POSTFIELDS, urldecode(http_build_query($post_array)));

Answer 3

it's solved changing foreach loop like

foreach($post as $key=>$value) { 
    if (is_array($value)) {
        foreach ($value as $val) {
            $post_string .= $key.'[]='.urlencode($val).'&';
        }
    } 
    else{ 
        $post_string .= $key.'='.urlencode($value).'&'; 
    }
}