How can code readability and organization be improved when dealing with complex PHP scripts like a vokabeltrainer?

To improve code readability and organization in complex PHP scripts like a vokabeltrainer, you can break down the code into smaller, manageable functions, use meaningful variable names, and add comments to explain the purpose of each section. Additionally, consider using object-oriented programming principles to encapsulate related functionality and reduce code duplication.

// Example of breaking down a vokabeltrainer script into smaller functions

function loadVocabulary() {
    // code to load vocabulary data from a file or database
}

function displayVocabulary($vocabulary) {
    // code to display the vocabulary in a user-friendly format
}

function quizUser($vocabulary) {
    // code to quiz the user on the vocabulary
}

$vocabulary = loadVocabulary();
displayVocabulary($vocabulary);
quizUser($vocabulary);