How can the use of empty() affect the behavior of PHP code?

Using empty() can affect the behavior of PHP code by checking if a variable is empty or not. It returns true if the variable is empty (or doesn't exist) and false if it contains a non-empty value. This can be useful for conditional statements or validating user input. 

// Example of how to use empty() in PHP code
$variable = '';

if (empty($variable)) {
    echo 'Variable is empty';
} else {
    echo 'Variable is not empty';
}

Keywords

empty() PHP code behavior data validation conditional statements

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