PHP foreach subarray in array

Question

I'm trying to parse an array that looks like this:

array(1) {
  ["StrategischeDoelstellingenPerDepartement"] => array(412) {
    [0] => array(5) {
      ["CodeDepartement"] => string(8) "DEPBRAND"
      ["NummerHoofdstrategischeDoelstelling"] => string(1) "1"
      ["Nummer"] => string(2) "27"
      ["Titel"] => string(22) "DSD 01 - HULPVERLENING"
      ["IdBudgetronde"] => string(1) "2"
    }
    [1] => array(5) {
      ["CodeDepartement"] => string(8) "DEPBRAND"
      ["NummerHoofdstrategischeDoelstelling"] => string(1) "2"
      ["Nummer"] => string(2) "28"
      ["Titel"] => string(24) "DSD 02 - Dienstverlening"
      ["IdBudgetronde"] => string(1) "2"
    }
    [2] => array(5) {
      ["CodeDepartement"] => string(8) "DEPBRAND"
      ["NummerHoofdstrategischeDoelstelling"] => string(1) "2"
      ["Nummer"] => string(2) "29"
      ["Titel"] => string(16) "DSD 03 - KLANTEN"
      ["IdBudgetronde"] => string(1) "2"
    }
    ...

(The array goes on but it's too big to post it here in its entirety)

I can do a foreach loop on the array like this:

foreach($my_arr->StrategischeDoelstellingenPerDepartement as $row){
    echo "i found one <br>";
}

However, I want to do the same thing on other arrays and I want to make the function generic. The first key (StrategischeDoelstellingenPerDepartement in this case) can sometimes change, which is why I'd like to do it generically. I've already tried the following:

foreach($my_arr[0] as $row){
    echo "i found one <br>";
}

But then I get the following notice, and no data:

Notice: Undefined offset: 0 in C:\Users\Thomas\Documents\GitHub\Backstage\application\controllers\AdminController.php on line 29

This is probably a silly question, but I'm new to PHP and this seemed like the right way to do it. Obviously, it isn't. Can anyone help me out, please?

leepowers · Accepted Answer · 2013-01-24 04:06:23Z

2

Use reset to grab the first element of $my_arr without knowing the key name:

$a = reset($my_arr);
foreach($a as $row){
    echo "i found one <br>";
}

answered Jan 24, 2013 at 4:06

leepowers

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Comments

Sverri M. Olsen · Accepted Answer · 2013-01-24 04:12:39Z

0

Shift the sub-array off the main array and loop over it:

$sub = array_shift($my_arr);
foreach ($sub as $row) {
    echo $row['Titel'], "<br>";
}

answered Jan 24, 2013 at 4:12

Sverri M. Olsen

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Community · Accepted Answer · 2023-11-14 22:24:31Z

0

You are trying to do is object, not array $my_arr->StrategischeDoelstellingenPerDepartement. You could use isset() to check the index existence:

if(isset($my_arr['StrategischeDoelstellingenPerDepartement'])){
    foreach($my_arr['StrategischeDoelstellingenPerDepartement'] as $row){
        echo "i found one <br>";
    }
}

Or, you could use array_values() to ignore the array keys and to make it an index array:

$my_new_arr = array_values($my_arr);
foreach($my_new_arr as $row){
    echo "i found one <br>";
}

edited Nov 14, 2023 at 22:24

CommunityBot

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answered Jan 24, 2013 at 4:09

Sithu

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Comments

Community · Accepted Answer · 2023-11-17 19:55:19Z

0

Use current ref : https://www.php.net/manual/en/function.current.php

$a = current($my_arr);
foreach($a as $row){
    echo "i found one <br>";
}

edited Nov 17, 2023 at 19:55

CommunityBot

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answered Jan 24, 2013 at 4:39

Prasanth Bendra

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