Sending array having space in keys being removed when sending by cURL

I have a strange issue.

$arr = array(
  'my key 1' => 'Some data 1',
  'my_key_2' => 'Some data 2',
  'my key 3' => 'Some data 3',
);

JavaScript
​x
 
$arr = array(  'my key 1' => 'Some data 1',  'my_key_2' => 'Some data 2',  'my key 3' => 'Some data 3',);​

I am sending this data using cURL …

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($curl);
curl_close($curl);

JavaScript
 
$curl = curl_init($url);curl_setopt($curl, CURLOPT_POST, true);curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);$response = curl_exec($curl);curl_close($curl);​

On receiveing end, I am just printing it back.

echo print_r($_POST);

Which prints it out as

array(
  [0] => 0,
  [my_key_2] => Some data 2,
)

JavaScript
 
array(  [0] => 0,  [my_key_2] => Some data 2,)​

It’s removing array keys with spacing.

Any ideas, what could be causing it?

Answer

Your spaces in params are replaced with + when you use http_build_query(), try providing an array without this function when you set the CURLOPT_POSTFIELDS option.

You can read about it in docs… https://www.php.net/manual/ru/function.http-build-query.php#95784

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Answer