<?php
$re = '/([A-Z][a-z]*)(\d*[-+]?)/';
$str = 'K+
Cr7+
O2-';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
print_r($matches);
- Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
- Array
(
[0] => Array
(
[0] => K+
[1] => K
[2] => +
)
[1] => Array
(
[0] => Cr7+
[1] => Cr
[2] => 7+
)
[2] => Array
(
[0] => O2-
[1] => O
[2] => 2-
)
)
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Array
(
[0] => Array
(
[0] => K+
[1] => K
[2] => +
)
[1] => Array
(
[0] => Cr7+
[1] => Cr
[2] => 7+
)
[2] => Array
(
[0] => O2-
[1] => O
[2] => 2-
)
)
preferences:
180.28 ms | 402 KiB | 162 Q