How does the PHP version impact the functionality and behavior of array manipulation functions?

The PHP version can impact the functionality and behavior of array manipulation functions because newer versions may introduce new functions or change the behavior of existing functions. To ensure consistent behavior across different PHP versions, it's important to check the PHP version before using array manipulation functions and adapt the code accordingly. 

// Check PHP version before using array manipulation functions
if (version_compare(PHP_VERSION, '7.2.0') >= 0) {
    // Use newer array manipulation functions
    $result = array_key_first($array);
} else {
    // Fall back to older array manipulation functions
    $keys = array_keys($array);
    $result = reset($keys);
}

Keywords

PHP version array manipulation functions functionality behavior impact

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