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@ 2019-06-25T13:22:55Z

<?php

$array = array('Dogs/Cats', 'Dogs/Cats/Mice', 'ANIMALS/SPECIES Dogs/Cats/Mice', '(Animals/Species) Dogs/Cats/Mice');
$re = '~(?:^(?:\(\w+/\w+\)\h+|[A-Z]+/[A-Z]+\h+)?|\G(?!^))\w+\K/~';
$array = preg_replace($re, " or ", $array);
print_r($array);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive previewkey bindings

200.07 ms | 405 KiB | 5 Q