- var_dump: documentation ( source)
- array_values: documentation ( source)
<?php
$allLanguages = [
'en' => ['locale' => 'en_US', 'code' => 'en', 'displayName' => 'English'],
'sv' => ['locale' => 'sv_SE', 'code' => 'sv', 'displayName' => 'Swedish'],
'de' => ['locale' => 'de_DE', 'code' => 'de', 'displayName' => 'German']
];
$currentLanguage = 'sv';
$allLanguages = array_values([$currentLanguage => $allLanguages[$currentLanguage]] + $allLanguages);
var_dump($allLanguages);