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  1. <?php
  2.  
  3. $array_1 = array('300','200','500');
  4. $array_2 = array('500','300','200');
  5. $flip_2 = array_flip($array_2);
  6. $key_array = array_map(function($el) use ($flip_2) { return $flip_2[$el]; }, $array_1);
  7. print_r($key_array);
Success #stdin #stdout 0.02s 52472KB
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stdin
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Standard input is empty
stdout
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Array
(
    [0] => 1
    [1] => 2
    [2] => 0
)
https://ideone.com/UkRyJ5
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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