Issue on creating script tags

[talhakhan-softtech]

I am using this code to add script tag in my store front
$src = "https://1d1d24b9.ngrok.io/new_prj/shopify.js"; $script = $shopify('POST', '/admin/script_tags.json', array( "script_tag"=> array( "event"=>"onload", "src"=>"$src" )));
but i am getting this error :
Notice: Undefined offset: 1 in /opt/lampp/htdocs/new_prj/vendor/phpish/http/http.php on line 13 Fatal error: Uncaught phpish\shopify\CurlException: [3] <url> malformed in /opt/lampp/htdocs/new_prj/edit_product.php on line 26 thrown in /opt/lampp/htdocs/new_prj/vendor/phpish/shopify/shopify.php on line 66

Can any one explain this how can i add script tag on it.