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  1. <?php
  2.  
  3. $a1 = array( 1, 2, 3 );
  4. $b = "a" . 1;
  5. $c = &${$b};
  6. for($i = 0; $i <= 5; $i++) {
  7.     $c[] = $i;
  8. }
  9. print_r($a1);
  10. echo "<br>";
  11. print_r($c);
  12. echo "<br>";
Success #stdin #stdout 0s 82560KB
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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] => 0
    [4] => 1
    [5] => 2
    [6] => 3
    [7] => 4
    [8] => 5
)
<br>Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 0
    [4] => 1
    [5] => 2
    [6] => 3
    [7] => 4
    [8] => 5
)
<br>
https://ideone.com/U8xILp
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
secret

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