3v4l.org

run code in 300+ PHP versions simultaneously
<?php function koapToNum($koap){ $o = array('#[^\d\.]#','\.\.'); $n = array('','.'); $digit = preg_replace($o, $n, $koap); return $digit; } echo koapToNum('12.21.1 ч.1.1');
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: preg_replace(): Delimiter must not be alphanumeric, backslash, or NUL in /in/kchPv on line 5
Output for 5.3.28 - 5.3.29, 5.4.20 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.28
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/kchPv on line 5
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.27, 5.4.0 - 5.4.19
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/9eP3I on line 5
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/9eP3I on line 5 12.21.1.1.1
Output for 4.3.1 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/9eP3I on line 5 12.21.1.1.1
Output for 4.3.0
Warning: Delimiter must not be alphanumeric or backslash in /in/kchPv on line 5 12.21.1.1.1
preferences:
231.42 ms | 401 KiB | 331 Q