Easy translation of text or phrases

By adding the below code to the functions.php file or a code plugin one can easily translate text without needing to install a plugin such as Loco Translate or translating using PO and MO files.
It only works with translatable text used inside __() or _e() functions.

/* Old Text = word or words to be translated. 
New Text = what it is to be translated into.
https://hoolite.be/coding/replace-or-translate-text-in-wordpress-via-functions-php/ */
function change_translate_text( $translated_text ) {
    if ( 'Old Text'  === $translated_text ) {
        $translated_text = 'New Text!';
    }
    return $translated_text;
}
add_filter( 'gettext', 'change_translate_text', 20 );

To translate multiple text.

function multi_change_translate_text( $translated ) {
    $text       = array(
        'Old Text 1' => 'New Text 1',
        'Old Text 2' => 'New Text 2',
        'Old Text 3' => 'New Text 3',
    );
    $translated = str_ireplace( array_keys( $text ), $text, $translated );
    return $translated;
}
add_filter( 'gettext', 'multi_change_translate_text', 20 );

Resources:

https://hoolite.be/coding/replace-or-translate-text-in-wordpress-via-functions-php/

https://www.businessbloomer.com/translate-single-string-woocommerce-wordpress/