What are some potential pitfalls to be aware of when using associative arrays in PHP, as discussed in the forum thread?

One potential pitfall when using associative arrays in PHP is accidentally overwriting existing keys with new values. To avoid this, always check if a key exists before assigning a new value to it. You can use the `isset()` function to determine if a key is already set in the array before assigning a new value. 

// Check if a key exists before assigning a new value
$myArray = [];

if (!isset($myArray['key'])) {
    $myArray['key'] = 'value';
}

Keywords

associative arrays PHP key collision array functions data structure

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