3v4l.org

run code in 300+ PHP versions simultaneously
<?php $row = new stdClass; $field_name = 'field_my_field'; $delta = 0; $row->{$field_name}[$delta] = 'value'; // This works just fine. echo 'field_name by itself: ' . $row->$field_name[0]; $title_field = $field_name . ':title'; $row->{$field_name . ':title'} = array($delta => 'title');
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
field_name by itself: value
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Undefined property: stdClass::$f in /in/U7vi8 on line 7 field_name by itself:

preferences:
170.6 ms | 402 KiB | 182 Q