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  1. <?php
  2.  
  3. $x = preg_replace("/(((\\d)\\d)\\d)/", '1=$1, 2=$2, 3=$3   ', "123456 789");
  4. echo $x;
  5.  
Success #stdin #stdout 0.01s 20568KB
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stdin
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Standard input is empty
stdout
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1=123, 2=12, 3=1   1=456, 2=45, 3=4    1=789, 2=78, 3=7
https://ideone.com/wuBVHw
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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