Iterating Over a Complex Associative Array in PHP

Iterating over a complex Associative Array in PHP

Nest two foreach loops:

foreach ($array as $i => $values) {
    print "$i {\n";
    foreach ($values as $key => $value) {
        print "    $key => $value\n";
    }
    print "}\n";
}

foreach loop over multidimensional associative array

You seem to be going about everything right..but if you are going to be using the start/end/rate values directly, you shouldn't need the second foreach loop. Something like this should get you going:

$values = array();
foreach($this->taxBand as $key => $band) {
    $calculation = ($band['end'] - $band['start']) / $band['rate'];

    $values[$key] = $calculation;
}
return $values;

I'm doubting this is the work you plan to do, but the point is you can access the inner associative array $band directly.

If you were to use a sub-loop for whatever reason, you could do something like this:

foreach($this->taxBand as $key => $band) {
    // Set variables for this band

    foreach($band as $subKey => $value) {
        switch($subKey) {
             case 'start': // do something
                 break;
             case 'end': // do something
                 break;
             case 'rate': // do something
                 break;
        }
    }

    // Calculations finished
}

complex multidimentional associative array process with foreach

I think you can really simplify this quote a bit. If you know that this will always be the structure then you can jump right down into the hotels and then into the rooms.

foreach($arr['search']['lr_rates']['hotel'] as $hotel) {
      // You can access all of the keys in the hotel array here

      foreach($hotel['hotel_rooms'] as $room) {
          // Do stuff with the room array
      }  
}

I would recommend either building your insert script on the fly and calling the database just once for the write, or if you are updating then using a transaction. As the number of rooms gets larger you will slow your script down with a bunch of writes to disk.

php loop through complex posts

You can use Recursive function like this.

<?php
    $arr = array(
                 "name"=> "mmmkkkk", 
                 "phones"=> array(
                                  "01553338897" , 
                                  "09090909098"
                                 ), 
                 "address"=> "107 ostras., Germany", 
                 "assistant"=> array(
                                      "name" => array(
                                                      "kmkkm",
                                                      "komar"
                                                     ), 
                                      "phone"=> array(
                                                      "01043338897" , 
                                                      "09099090090"
                                                     )
                                   )
                );

    function rec($arr) {

        foreach($arr as $key => $p_value)
        {
            if (is_array($p_value)) {
                rec($p_value);
            } else {
                echo $key.":".$p_value."\n";
            }
        }

    }

    rec($arr);

?>

php loop through complex posts

You can use Recursive function like this.

<?php
    $arr = array(
                 "name"=> "mmmkkkk", 
                 "phones"=> array(
                                  "01553338897" , 
                                  "09090909098"
                                 ), 
                 "address"=> "107 ostras., Germany", 
                 "assistant"=> array(
                                      "name" => array(
                                                      "kmkkm",
                                                      "komar"
                                                     ), 
                                      "phone"=> array(
                                                      "01043338897" , 
                                                      "09099090090"
                                                     )
                                   )
                );

    function rec($arr) {

        foreach($arr as $key => $p_value)
        {
            if (is_array($p_value)) {
                rec($p_value);
            } else {
                echo $key.":".$p_value."\n";
            }
        }

    }

    rec($arr);

?>

Problem Iterating through a multi-dimensional array in PHP

The id is part of the array, as you can access it like $value['id']

In the second foreach to prevent confusion you should select a different name for the key and the value.

Try it like this:

foreach($usmDet as $key => $value){
    if(is_array($value)){
        foreach($value as $k => $v){
            echo $v['id'] . "<br>";
        }
    }
}

Result:

74696
1525
73401
210

Php demo

To get all the values for key "id" when multiple nested arrays, you could use array_walk_recursive

$ids = [];
array_walk_recursive($usmDet, function($value, $key) use (&$ids){
    if ($key === "id") {
        $ids[] = $value;
    }
});

print_r($ids);

Php demo

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