entity_metadata_wrapper()

https://www.drupal.org/documentation/entity-metadata-wrappers

$user_wrapper = &entity_metadata_wrapper('user', $user);
        $status = $user_wrapper->field_status->value(); //取值
        array_push($status,'b');
        $user_wrapper->field_status->set($status);  // set
        $user_wrapper->save();

 

<?php
$wrapper = entity_metadata_wrapper('node', $node);
   $wrapper->author->mail->value();

  $wrapper->author->mail->set('sepp@example.com') 

?>

 删除数据:

<?php
// Using an empty ->set(NULL) removes the value - without NULL you'll get a PHP notice that set($value) requires 1 parameter.
$wrapper->field_data->set(NULL);

// And handles correctly the deltas when using multiple values fields
$wrapper->field_data[$delta]->set(NULL);
?>

 

多值字段取值:

<?php
$first_name = $wrapper->field_tags[0]->name->value();
?> 

Example using field collections

<?php
    // Populate the fields.
    $ewrapper = entity_metadata_wrapper('node', $node);
    $ewrapper->field_lead_contact_name->set($contact_name);
    $ewrapper->field_lead_contact_phone->set($contact_phone);
    $ewrapper->field_lead_contact_email->set($contact_email); 
 
    // Create the collection entity and set it's "host".
    $collection = entity_create('field_collection_item', array('field_name' => 'field_facilities_requested'));
    $collection->setHostEntity('node', $node); 

   

// Now define the collection parameters.
    $cwrapper = entity_metadata_wrapper('field_collection_item', $collection);
    $cwrapper->field_facility->set(intval($offset));
    $cwrapper->save(); 

   

// Save.
    $ewrapper->save();
?>