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  1. <?php
  2.  
  3.     $ID = '3803_452.jpg';
  4.  
  5.     $id = substr($ID, 0, strpos($ID, '_'));
  6.     $seq = substr($ID, strlen($id) + 1, strpos($ID, '.') - strlen($id) - 1);
  7.     if (strlen($id) == 0) {
  8.     	$id = $seq;
  9.     	$seq = '';
  10.     }
  11.  
  12.     echo $id; // 3803
  13.     echo '<>';
  14.     echo $seq; // 452
Success #stdin #stdout 0.01s 82880KB
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stdin 
Standard input is empty
stdout 
3803<>452
https://ideone.com/smqebV
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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