Using data from an array to another array

Question

I am new to PHP, willing to learn. I recently encountered an issue while completing an exercise. Here`s what I have to do:

I need to define, first, an multi-dimensional array witch contains the producer and the model of certain mobile phones

EG:

$model = array( 
    "manufacurer" => array ("model1", "model2", ...),
    "manufacurer2" => "array( "model3", model4", ...),

);

Next task: Starting from the above array $model I have to generate another multi-dimensional array, let's call it $shop. It should look like this:

$shop = array("model1"=>array("manufacurer"=> "manufacurer1", 
                              "caractheristics" => array("lenght"=>...
                                 "wide"=>...,
                                 "weight"=>...)
            ), 
          "model2"=>array("manufacurer"=>...etc

Here's my code:

 <?php 

$modele = array( 
            "Nokia" => array ("3310", "n8", "1100"),
            "Samsung" => array( "Galaxy S7", "Bean", "e220"),
            "Sony" => array("Xperia", "K750", "W810")
); 
print_r($modele);
// it has stored my values
echo "<br>";
$magazin = array(
            '$model["Nokia"][0]' => array(
                                                'manufacturer' => '$modele[2]'
// How do I use the values from the $model array to $shop array? If i print_r($model["Nokia"][0]) it returnes 3310, witch is ok, but when I print_r($magazin) it returns: Array ( [$modele["Nokia"][0]] => Array ( [producator] => $modele[2] ) )
)
);
print_r($magazin);

 ?>

dwkd · Accepted Answer · 2014-06-26 15:49:14Z

1

Remove the single quotes

$magazin = array( $model["Nokia"][0] => array( 'manufacturer' => $modele[2] ) );

Also, modele is an associative array so you should use the key rather than the index in case you add/remove stuff at the beginning of the array:

$magazin = array( $model["Nokia"][0] => array( 'manufacturer' => $modele["Sony"] ) );

..also I'm guessing for manufacturer you were looking for the word "Sony" rather then the array it holds at that key.. which in this case you either just type "Sony" or you get the key at position 2

$magazin = array( $model["Nokia"][0] => array( 'manufacturer' => array_keys($modele)[2] ) );

edited Jun 26, 2014 at 15:49

answered Jun 26, 2014 at 15:34

dwkd

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Comments

Haim Evgi · Accepted Answer · 2014-06-26 14:36:05Z

0

omit the ' from variable like:

$magazin = array($model["Nokia"][0] => array('manufacturer' => $modele[2]));

look also on this link

answered Jun 26, 2014 at 14:36

Haim Evgi

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Comments

fdehanne · Accepted Answer · 2014-06-26 14:39:03Z

0

$magazin = array();
$magazin[$model['Nokia'][0]] = array(
  "manufacurer"=> "manufacurer1", 
  "caractheristics" => array(
    "lenght" => ...
    "wide" => ...,
    "weight" => ...
  )
);

answered Jun 26, 2014 at 14:39

fdehanne

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Comments

Ruben de Vries · Accepted Answer · 2014-06-26 14:42:30Z

when you quote it's always a string, so if you remove the quotes then your code would already work.
Here's an example with also added code to automate it;

<?php

$modelsByManufacturer = array(
    "Nokia" => array("3310", "n8", "1100"),
    "Samsung" => array("Galaxy S7", "Bean", "e220"),
    "Sony" => array("Xperia", "K750", "W810")
);

echo "<hr />";
print_r($modelsByManufacturer);

// if you'd hardcode it it would look like this:
$magazin = array(
    $modelsByManufacturer["Nokia"][0] => array(
        'manufacturer' => $modelsByManufacturer["Nokia"]
    )
);

echo "<hr />";
print_r($magazin);

// if you'd automate it it would look like this:

// create empty array to fill
$magazin = array();

// loop over the data source, use 'as $key => $value' syntax to get both the key and the value (which is the list of models)
foreach ($modelsByManufacturer as $manufacturer => $models) {
    // loop over the child array, the models to add them
    foreach ($models as $model) {
        $magazin[$model] = array(
            'manufacturer' => $manufacturer,
            'model'        => $model,
        );
    }
}

echo "<hr />";
print_r($magazin);

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