ObjectCheckFirst

example.php

<?php

// This is an object that can come from a few sources into a reusable resolve for urls for a graphql resolver
// can also be an array from a different source.
$value = (object) ['url' => 'https://example.com'];
// As array
$arrayValue = ['url' => 'https://example.com'];

/**
* The normal definition for the function is in the doc block.
* @param             $value
* @param array       $args
* @param ResolveInfo $info
*
* @return string|null
*/
function resolve($value): ?string
{
    //This is the only actual thing this function does
    return $value['url'] ?? $value->url ?? null;

    // This option will always work in both cases
    // return $value->url ?? $value['url'] ?? null
}

// This one fails 
var_dump(resolve($value));

// This one passes
var_dump(resolve($arrayValue));