Get JSON key with PHP

Question

I have a JSON that looks like this

$array = '{
    "de": {
        "name": "last_name",
        "label": "Last Name",
        "f_type": "input"
    },
    "en": {
        "name": "last_name",
        "label": "Last Name",
        "f_type": "input"
    }
}';

and what I want to achieve is when the language is English to show values from the en array

Then I am looping through the JSON like this.

$json_values = json_decode( $array, true);

foreach ($json_values as $key) {
    foreach ($key as $item => $value) {
        if ($item == 'label') {
            $label = $value;
        }
        if ($item == 'name') {
            $name = $value;
        }
        if ($item == 'f_type') {
            if ($value == 'input') {
            echo  '<div class="form-group"><label for="usr">'.$label.':</label>
                    <input type="text" value="'.$name.'" class="form-control"></div>';
            }
        }
    }
}

However, if I try to get the language key name and compare if it is a specific value like this it is not working

foreach ($json_values as $key) {
   if( $key == 'en'){
      echo "language is English";
      }
}

So, I don't know how to check what the language is and to show values for that language only.

Forget about the fact that you received the data initially as JSON. You decoded it to a dictionary already, so its former representation is irrelevant. That said, are you looking for the `foreach ($sequence as $key => $value) ...` syntax? — Ulrich Eckhardt, Jul 06 '21 at 06:06
Accessing the values via something like `$json_values[$language]['name']` is surely preferable to looping over them. If you want to loop over all languages, then it's `foreach ($json_values as $language => $data) { echo "... $data[name] ..."; }`. — deceze, Jul 06 '21 at 06:08
@NigelRen, that will not work. as I need to know the name of the language key that I don't know if exists, as there might be other languages too. So, I will need to put the key name into a string and then compare it. — lStoilov, Jul 06 '21 at 06:16
`foreach ($json_values as $key)` loops over the *values*, not the keys! Even if you name the variable "`$key`", it's still the values. — deceze, Jul 06 '21 at 06:20

score 2 · Accepted Answer · answered Jul 06 '21 at 06:13

$json = '{
    "de": {
        "name": "last_name",
        "label": "Last Name",
        "f_type": "input"
    },
    "en": {
        "name": "last_name",
        "label": "Last Name",
        "f_type": "input"
    }
}';

$json = json_decode($json,true);
$lang = 'en';

if($lang == 'en'){
    $values = $json[$lang];
} else {
    $values = $json['de'];
}

echo  '<div class="form-group"><label for="usr">'.$values['label'].':</label><input type="text" value="'.$values['name'].'" class="form-control"></div>';

Get JSON key with PHP

1 Answers1