Shopify updating theme template using curl php - php

Question

Please can anyone help with me this, I am fed up by trying many methods but not getting proper the solution.
Below is my code I am trying to update liquid template file using php and curl but I am not able to do that.
<?php
error_reporting(-1);
$value = 'this is testing';
//Code for updating file
//$service_url = 'https://apikeyauthentication#test.myshopify.com/admin/themes/160467719/assets.json?asset[key]=snippets/product-preview.liquid&asset[value]=7788888&theme_id=160467719';
$service_url = 'https://apikeyauthentication#test.myshopify.com.myshopify.com/admin/themes/160467719/assets.json';
$curl = curl_init($service_url);
$curl_post_data = array(
'asset'=> array(
"key" => "snippets/product-akash123.liquid",
"value" => 'This is testing'
)
);
//echo json_encode($curl_post_data);die;
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/x-liquid'));
curl_setopt($curl, CURLOPT_PUT, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($curl_post_data));
//curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "PUT");
//curl_setopt($curl, CURLOPT_POSTFIELDS,http_build_query($curl_post_data));
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
$curl_response = curl_exec($curl);
if ($curl_response === false) {
$info = curl_getinfo($curl);
var_dump(curl_error($curl));
curl_close($curl);
die('error occured during curl exec. Additioanl info: ' . var_export($info));
}
curl_close($curl);
$decoded = json_decode($curl_response);
echo "<pre>";print_r(curl_getinfo($curl));
//echo curl_error($curl);
echo "<pre>"; print_r($decoded);die('loll');
?>

Answer 1

You'll want to set the Content-Type header to application/json. Try something like this:
<?php
$ch = curl_init('https://key:pass#yourstore.myshopify.com/admin/themes/160467719/assets.json');
$asset = array('asset'=> array(
'key' => 'snippets/yournewsnippet.liquid',
'value' => '{% comment %} here is your new snippet {% endcomment %}'
));
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($asset));
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
$response = curl_exec($ch);