array_count_values

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  • Guest's Avatar
    #1

    array_count_values

    hello,

    here is the code:

    <?
    $a=array(1,3,4, 5,6,7,8,9,10);
    $b=array_count_ values($a);
    print_r($b);
    ?>

    the result will be: [1]=>1 [3]=>1...........

    I would like that the keys which doesnt appear in the result of
    array_count_val ues (here it is the number 2)
    have the value 0.......the new result will be: [1]=>1 [2]=>0
    [3]=>1...........

    how can we formulate a php code to resolve that ?


    Tags: None
    • Pedro Graca
      #2
      Re: array_count_val ues

      <a> wrote:[color=blue]
      > I would like that the keys which doesnt appear in the result of
      > array_count_val ues (here it is the number 2)
      > have the value 0.......the new result will be: [1]=>1 [2]=>0
      > [3]=>1...........
      >
      > how can we formulate a php code to resolve that ?[/color]


      php$ cat countall.php
      <?php
      $a = array(1, 3, 4, 5, 6, 7, 8, 9, 10);
      $b = array_count_val ues($a);

      #print_r($b);

      for ($i = 0; $i <= max($a); ++$i) {
      if (!isset($b[$i])) $b[$i] = 0;
      }
      ksort($b);
      print_r($b);
      ?>

      php$ php countall.php
      Array
      (
      [0] => 0
      [1] => 1
      [2] => 0
      [3] => 1
      [4] => 1
      [5] => 1
      [6] => 1
      [7] => 1
      [8] => 1
      [9] => 1
      [10] => 1
      )

      --
      Mail to my "From:" address is readable by all at http://www.dodgeit.com/
      == ** ## !! ------------------------------------------------ !! ## ** ==
      TEXT-ONLY mail to the whole "Reply-To:" address ("My Name" <my@address>)
      may bypass my spam filter. If it does, I may reply from another address!

        Comment

        • Jan Pieter Kunst
          #3
          Re: array_count_val ues

          a wrote:[color=blue]
          > hello,
          >
          > here is the code:
          >
          > <?
          > $a=array(1,3,4, 5,6,7,8,9,10);
          > $b=array_count_ values($a);
          > print_r($b);
          > ?>
          >
          > the result will be: [1]=>1 [3]=>1...........
          >
          > I would like that the keys which doesnt appear in the result of
          > array_count_val ues (here it is the number 2)
          > have the value 0.......the new result will be: [1]=>1 [2]=>0
          > [3]=>1...........
          >
          > how can we formulate a php code to resolve that ?[/color]

          Like this, for example:

          $a = array(1,3,4,5,6 ,7,8,9,10);
          $range = range(1,10);
          foreach($range as $number) {
          if (in_array($numb er, $a)) {
          $b[$number] = 1;
          } else {
          $b[$number] = 0;
          }
          }

          JP

          --
          Sorry, <devnull@cauce. org> is een "spam trap".
          E-mail adres is <jpk"at"akamail .com>, waarbij "at" = @.

            Comment

            • Pedro Graca
              #4
              Re: array_count_val ues

              Pedro Graca wrote:[color=blue]
              > <?php
              > $a = array(1, 3, 4, 5, 6, 7, 8, 9, 10);
              > $b = array_count_val ues($a);
              >
              > #print_r($b);
              >
              > for ($i = 0; $i <= max($a); ++$i) {[/color]

              Make that

              for ($i = 1; $i < max($a); ++$i) {
              [color=blue]
              > if (!isset($b[$i])) $b[$i] = 0;
              > }
              > ksort($b);
              > print_r($b);
              > ?>[/color]

              --
              Mail to my "From:" address is readable by all at http://www.dodgeit.com/
              == ** ## !! ------------------------------------------------ !! ## ** ==
              TEXT-ONLY mail to the whole "Reply-To:" address ("My Name" <my@address>)
              may bypass my spam filter. If it does, I may reply from another address!

                Comment

                • scotty
                  #5
                  Re: array_count_val ues

                  I think the below works.

                  Scott


                  $a=array(1,3,4, 5,6,7,8,9,10);
                  $b=array_count_ values($a);

                  //sort the key
                  ksort($b);

                  //document highest key
                  foreach($b as $key=>$value)
                  {
                  $counter=$key;
                  }

                  //load elements that do not exist with zeros
                  for($i=$counter ;$i>=0;$i--)
                  {
                  if(!isset($b[$i]))
                  {
                  $b[$i]=0;
                  }
                  }

                  //sort by key again
                  ksort($b);
                  print_r($b);






                  <a> wrote:[color=blue]
                  > hello,
                  >
                  > here is the code:
                  >
                  > <?
                  > $a=array(1,3,4, 5,6,7,8,9,10);
                  > $b=array_count_ values($a);
                  > print_r($b);
                  > ?>
                  >
                  > the result will be: [1]=>1 [3]=>1...........
                  >
                  > I would like that the keys which doesnt appear in the result of
                  > array_count_val ues (here it is the number 2)
                  > have the value 0.......the new result will be: [1]=>1 [2]=>0
                  > [3]=>1...........
                  >
                  > how can we formulate a php code to resolve that ?[/color]

                    Comment

                    • scotty
                      #6
                      Re: array_count_val ues

                      Pedro's is more concise.

                      Scotty

                        Comment

                        • scotty
                          #7
                          Re: array_count_val ues

                          Pedro's is more concise.

                          Scotty

                            Comment

                            • Janwillem Borleffs
                              #8
                              Re: array_count_val ues

                              a wrote:[color=blue]
                              > I would like that the keys which doesnt appear in the result of
                              > array_count_val ues (here it is the number 2)
                              > have the value 0.......the new result will be: [1]=>1 [2]=>0
                              > [3]=>1...........
                              >
                              > how can we formulate a php code to resolve that ?[/color]

                              <?php

                              $a = array(1,3,4,5,6 ,7,8,9,10);
                              $b = array_count_val ues($a);
                              $c = array_fill(1,10 ,0);
                              $d = array_diff($c,$ b);
                              ksort($e = $b + $d);
                              print_r($e);

                              ?>


                              JW



                                Comment

                                • Guest's Avatar
                                  #9
                                  Re: array_count_val ues

                                  Tank you for all these answers !


                                    Comment

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