Change specific keys of multidimensional array in PHP

Question

I have an two dimensional array called $array. After another question here, I know how to change the whole child array from a two dimensional array like this:

Code

$keys = array(0, 1);    
  foreach ($keys as $key) { 
      foreach ($array[$key] as $key2 => $value) {  
          $array[$key][$key2] = str_replace($stamm, $stamm2, $value);
        }
    }

How is it possible to change only $array[0][3],$array[0][4] and $array[1]?

$array use $stamm + ending of an verb for a time for example "ons". I have to change for some cases the root of the verb ($stamm).
With the code above it works perfectly to change the whole array[0] and array[1]. .

Could you please elaborate a little on what you really intend to do ? I mean the functional part, what you are trying to achieve? Then we could probably provide a better solution / explanation Thank you — PEM
– PEM, Commented Jun 4, 2015 at 8:17
Definitly ! Thank you :) I believe some simple solutions have already been provided below. As an complement, you could also "type" your values, y that I mean making money pattern with stamms and endings. then if you work with simple objects, you can check against types which would be probably be more readable, ie : if($value instanceof Stamm) then... A little more complicated, but probably easier to read later. — PEM
– PEM, Commented Jun 4, 2015 at 8:29

Luthando Ntsekwa · Accepted Answer · 2015-06-04 08:22:33Z

5

Why dont you simply do this

$array[0][3] = //your value;
$array[0][4] =  //your value;

and if you want to change all value of $array[1]:

foreach ($array[1] as $key => $value) {  
      $array[1][$key] = //your value;
    }

EDIT to do all this with a foreach :

foreach ($keys as $key) { 
  foreach ($array[$key] as $key2 => $value) { 
      if(($key==0 && ($key2 == 3 || $key2 == 4)) || ($key == 1) ) 
          $array[$key][$key2] = //your value;
    }
}

edited Jun 4, 2015 at 8:22

answered Jun 4, 2015 at 8:08

Luthando Ntsekwa

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5 Comments

Grischa Over a year ago

Before the foreach-loop their is a if-loop. I have many, similar if-loops and I will change often some parts auf the array (conjugation script). I thought it would be shorter and more elegant to do this with foreach-loops.

Ismael Miguel Over a year ago

Why not foreach ($array[1] as &$value) { $value = $new_value; }?

Luthando Ntsekwa Over a year ago

@Grischa check the EDIT part of my answer for automated solution

Grischa Over a year ago

@LuthandoLoot Thanks this is what I was searching for. Would it be more elegant to change && ($key2 == 3 || $key2 == 4) to an array like $key2 = array(3, 4) ?

Luthando Ntsekwa Over a year ago

yes you can actually add your accepted values in an array like this $acceptedValues = array(1,2); then if(in_array($key2, $acceptedValues ))

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