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  1. <?php
  2. $strokes = array();
  3.  
  4. $_POST = array("h1" => 1, "h2" => 2, "h3" => 3, "h4" => 0);
  5.  
  6.         $strokes_keys = array('h1', 'h2', 'h3', 'h4');
  7.  
  8.         foreach ($strokes_keys as $stroke) {
  9.           if (isset($_POST[$stroke])) {
  10.           	array_push($strokes, $_POST[$stroke]);
  11.           	}
  12. 		}
  13.         $counts = count($strokes);
  14.  
  15.         var_dump($strokes);
  16.         var_dump($counts);
  17.  
  18.  
Success #stdin #stdout 0.02s 52472KB
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stdin
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stdout
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array(4) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
  [3]=>
  int(0)
}
int(4)
https://ideone.com/qBO4rx
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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