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<?php
namespace Bdf\Form\Child\Http;
/**
* Extract HTTP fields value using a simple array offset
* This is the default http fields implementation
*
* <code>
* $fields = new ArrayOffsetHttpFields('child');
* $fields->extract(['child' => 'value'], 'not found'); // => 'value'
* $fields->extract(['other' => 'value'], 'not found'); // => 'not found'
* </code>
*/
final class ArrayOffsetHttpFields implements HttpFieldsInterface
{
* @var string
private $offset;
* ArrayOffsetHttpFields constructor.
* @param string $offset The field name
public function __construct(string $offset)
$this->offset = $offset;
}
* {@inheritdoc}
public function extract($httpFields, $defaultValue)
if (!is_array($httpFields) || !isset($httpFields[$this->offset])) {
return $defaultValue;
$value = $httpFields[$this->offset];
// No default value : return the real submitted value
if ($defaultValue === null) {
return $value;
return $value !== '' && $value !== null && $value !== [] ? $value : $defaultValue;
public function contains($httpFields): bool
return isset($httpFields[$this->offset]);
public function format($value)
return [$this->offset => $value];
public function get(?HttpFieldPath $path = null): HttpFieldPath
return $path === null ? HttpFieldPath::named($this->offset) : $path->add($this->offset);
b2pweb /
bdf-form
