3v4l.org

run code in 500+ PHP versions simultaneously
<?php $result = []; $implode = ',&nbsp;'; $var1 = 'xyz'; $var2 = 'abc'; $result[] = $var1; $result[] = $var2; $filtered_result = array_filter($result); echo implode($implode,$filtered_result); ?>
Output for 5.6.38 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.33, 8.4.1 - 8.4.26, 8.5.0 - 8.5.9
xyz,&nbsp;abc

preferences:
19.12 ms | 1136 KiB | 8 Q