Trait to implement dynamic assignment of object variables from array with undefined keys. Useful for Request objects.

WithDynamicAssignment.php

<?php

trait WithDynamicAssignment
{
    public function set(
        mixed $dest,
        array $props,
        string $field,
        string $type = 'string',
        mixed $default = null
    ): void {
        $dest->$field = self::get($props, $field, $type, $default);
    }

    /**
     * @param array<string,mixed> $props
     */
    public function get(array $props, string $field, string $type = 'string', mixed $default = null): mixed
    {
        if (isset($props[$field])) {
            $value = $props[$field];
            if (!settype($value, $type)) {
                throw new \Exception("Could not cast $field to type $type");
            }
            return $value;
        }
        return $default;
    }
}