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  1. <?php
  2. $re = "#(?>ab|cr)\d+#"; 
  3. $str = "rw200-208-ab66\nfg200-cr30-201"; 
  4. preg_match_all($re, $str, $matches);
  5. print_r($matches[0]);
Success #stdin #stdout 0.02s 24192KB
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stdin
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Standard input is empty
stdout
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Array
(
    [0] => ab66
    [1] => cr30
)
https://ideone.com/NUzWtA
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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