3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = ", , GUWAHATI, TEZPUR, , BAMUNI HILLS, MAHABHAIRAB TEMPLE, AGNIGARH , "; echo preg_replace('/\s*(?:,\s*)+/', ', ', trim($string, ", \n\r\t\v\x00"));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
GUWAHATI, TEZPUR, BAMUNI HILLS, MAHABHAIRAB TEMPLE, AGNIGARH
preferences:
100.4 ms | 1250 KiB | 4 Q