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  1. <?php
  2.  
  3. $currentValues = [1, 2];
  4. $newValues = [1, 3, 1, 4, 2];
  5. $a = array();
  6. $checkValues = array_flip($currentValues);
  7. foreach($newValues as $v){
  8. 	if(!isset($checkValues[$v])){
  9. 		$a[] = $v;
  10. 	}
  11. }
  12. print_r(array_merge($currentValues, $a));
Success #stdin #stdout 0.02s 24448KB
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stdin
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Standard input is empty
stdout
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Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)
https://ideone.com/bwTz2u
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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