Where have you encountered dynamic typing in your work experience?

In PHP, JavaScript, Python.

In PHP, for example, when working with variables that can change their type depending on the assigned value.

<?php
$var = 10; // int
$var = "hello"; // string
$var = []; // array

When passing arguments to functions and returning values without explicitly specifying the type.

<?php
function processData($data) {
    // The type of $data is not defined in advance
    // ...processing logic...
    return $result; // The type of $result is also not defined in advance
}

processData(123);
processData("text");
processData(['a', 'b']);

When working with associative arrays where values can have different types.

<?php
$userInfo = [
    'name' => 'Alice', // string
    'age' => 30,      // int
    'isStudent' => false // bool
];