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  1. <?php
  2.  
  3. $texto = "dge_ANEXO_II_F_TJ[1].pdf";
  4. $pattern = '/[a-z]{3}_(ANEXO|Anexo|anexo)_[A-Za-z]{1,7}_[A-Z]{1}_[A-Z0-9]{2,5}\[[0-9]{1}\].pdf$/';
  5. preg_match($pattern, $texto, $matches);
  6. print_r($matches);
Success #stdin #stdout 0.02s 52472KB
stdin
Standard input is empty
stdout
Array
(
    [0] => dge_ANEXO_II_F_TJ[1].pdf
    [1] => ANEXO
)