What are best practices for structuring arrays in PHP to avoid "Illegal offset type" errors?

When working with arrays in PHP, it's important to ensure that array keys are of appropriate types (usually integers or strings). Avoid using objects or arrays as keys, as this can lead to "Illegal offset type" errors. To prevent these errors, stick to using scalar values as keys when structuring arrays in PHP. 

// Incorrect way: using an object as an array key
$incorrectArray = [
    new stdClass() => 'value'
];

// Correct way: using a string as an array key
$correctArray = [
    'key' => 'value'
];

Keywords

arrays PHP structuring illegal offset type errors

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