Huge input lookup error on simplexml_load_string function

问题

I have an API response where sizes vary. It doesn't show error on large xml data(appx. 20MB), when I try to convert the xml object into std object using. This is my code

$xml = simplexml_load_string($apiResponse);
$object = json_decode(json_encode($xml));

Error Message is:

simplexml_load_string(): Entity: line 1: parser error : internal error: Huge input lookup

I google and found this answer on stackoverflow and changed my code to

simplexml_load_string($apiResponse, 'SimpleXMLElement', LIBXML_PARSEHUGE)

But, error is still same. Anyone has got any Idea? Thank you in advance

来源：https://stackoverflow.com/questions/42467791/huge-input-lookup-error-on-simplexml-load-string-function