3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myObj = (object)array('id' => 'foo', 'cat_1' => 'bar', 'cat_2' => 'baz'); $count = 0; foreach ($myObj as $key => $value) { if (strpos($key, 'cat_') === 0) { $count++; } } var_dump($count);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(2)

preferences:
252.85 ms | 405 KiB | 397 Q