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Why is my array foreach not displaying correctly?

sittiponder

By sittiponder
in PHP Coding Help

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sittiponder Newbie

sittiponder

Posted
Posted

Check out my third array. It's only printing out "Reese's" and "gummy worms."

I want it to display "M&M's," "Snickers," "Reese's," "gummy bears," and "gummy worms."

I'm doing this for my codecademy course. The important part starts on line 33.

I'm new to coding.

<html>
  <head>
    <title>Iteration Nation</title>
  </head>
  <body>
    <p>
      <?php    
        $food = array('pizza', 'salad', 'burger');
        $salad = array('lettuce' => 'with',
                   'tomato' => 'without',
                   'onions' => 'with');
    
      // Looping through an array using "for".
      // First, let's get the length of the array!
      $length = count($food);
    
      // Remember, arrays in PHP are zero-based:
      for ($i = 0; $i < $length; $i++) {
        echo $food[$i] . '<br />';
      }
    
      echo '<br /><br />I want my salad:<br />';
    
      // Loop through an associative array using "foreach":
      foreach ($salad as $ingredient=>$include) {
        echo $include . ' ' . $ingredient . '<br />';
      }
    
      echo '<br /><br />';
    
      // Create your own array here and loop
      // through it using foreach!
    $candy = array('chocolate'=> 'M&Ms', 
                'chocolate'=>'Snickers', 
                'chocolate'=>'Reese\'s', 
                'gummy'=>'bears', 
                'gummy'=>'worms');
    foreach ($candy as $type => $specific):
        if ($type == 'chocolate'){
            echo $specific."<br></br>";
        } else {
            echo $type . ' ' . $specific;
        }
        continue;
    endforeach;
      ?>
    </p>
  </body>
</html>
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vinny42 Newbie

vinny42

Posted
Posted

The syntax array('foo'=>'bar') assigns 'bar' to the index 'foo'. There can be only one value per index, so you are overwriting 'snickers' with 'reese' and 'bears' with 'worms'.

 

It seems like you need to go one deeper: array('chocolate'=>array('snickers','reese'), 'gummy'=>array('bears','worms'));

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sittiponder Newbie

sittiponder

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  • Author
Posted

Now I have

    $candy = array('chocolate' => array('M&Ms', 'Snickers','Reese\'s'), 'gummy' => array('bears', 'worms'));
    foreach ($candy as $type => $specific)
    {
        if ($type == 'chocolate')
        {
            echo $specific."<br />";
        } 
        else 
        {
            echo $type . ' ' . $specific;
        }
    }

And it prints 

 

Array

gummy Array

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sittiponder Newbie

sittiponder

Posted
  • Author
Posted

I fixed it by switching $type and $specific.

    $candy = array('M&Ms' => 'chocolate' , 
                'Snickers' => 'chocolate', 
                'Reese\'s' => 'chocolate', 
                'bears' => 'gummy', 
                'worms' => 'gummy');
    foreach ($candy as $type => $specific)
    {
        if ($specific == 'chocolate')
        {
            echo $type."<br />";
        } 
        else 
        {
            echo $specific . ' ' . $type . "<br />";
        }
    }

Thanks for the help.

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PaulRyan Member

PaulRyan

Posted
Posted

You are making more work for yourself, if you have to repeat data, it's probably not correctly written.

 

Something like this:

 

<?PHP

  $candy = array('chocolate' => array('Mars', 'M&Ms', 'Reese\'s'),
                 'gummy'     => array('Worms', 'Bears'));
                 
  foreach($candy AS $type => $typeArray) {
 
    if($type == 'chocolate') {
      foreach($typeArray AS $specific) {
        echo $specific.' <br>';
      }
    } else {
      foreach($typeArray AS $specific) {
        echo $specific.' '.$type.' <br>';
      }
    }
    
  }
 
?>
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vinny42 Newbie

vinny42

Posted
Posted

When you have an array that contains arrays, you have to process the sub-arrays as arrays, not just print them because when you do echo(array('foo')); you will get "Array".

 

So, you'd get someting like:

 

$arrArray = array('chocolate'=>array('mint','bar','rabbit));

foreach($arrArray as $strKey=>$arrContent)

{

echo $strkey.' contains: ';

 foreach($arrContent as $strstuff)

 {

  echo $strStuff .' ';

 }

echo "<br/>";

}

 

Or, to see what you are dealing with:

var_dump($arrArray);

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