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  1. <?php
  2.  
  3. $var1='a:1:{i:123;s:3:"123";}';
  4. $var2='a:1:{i:56;s:2:"56";}';
  5.  
  6. echo serialize(unserialize($var1) + unserialize($var2)). "\n";
  7.  
  8. $var1='a:2:{i:56;s:2:"56";i:123;s:3:"123";}';
  9. $var2='a:1:{i:154;s:3:"154";}';
  10.  
  11. echo serialize(unserialize($var1) + unserialize($var2)). "\n";
Success #stdin #stdout 0.01s 82880KB
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stdin
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stdout
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a:2:{i:123;s:3:"123";i:56;s:2:"56";}
a:3:{i:56;s:2:"56";i:123;s:3:"123";i:154;s:3:"154";}
https://ideone.com/qEi0pV
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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