Online PHP editor | output for 2DqZQ

<?php trait HasTimestamps { protected $timestamps = true; public function setCreatedAt($value) { echo 'HasTimestamps::setCreatedAt'.PHP_EOL; return $this; } public function setUpdatedAt($value) { echo 'HasTimestamps::setUpdatedAt'.PHP_EOL; return $this; } } trait ExtendHasTimestamps { public function setCreatedAt($value) { echo 'ExtendHasTimestamps::setCreatedAt'.PHP_EOL; if ($value !== '') return $this; return parent::setCreatedAt($value); } public function setUpdatedAt($value) { echo 'ExtendHasTimestamps::setUpdatedAt'.PHP_EOL; if ($value !== '') return $this; return parent::setUpdatedAt($value); } } class Model { use HasTimestamps; } class MyModel extends Model { use ExtendHasTimestamps; } (new MyModel)->setCreatedAt(''); echo PHP_EOL; (new MyModel)->setCreatedAt('time');