What are potential pitfalls when using empty() function in PHP?

When using the empty() function in PHP, one potential pitfall is that it considers variables with a value of '0' or '0.0' as empty, which may not be the desired behavior. To solve this issue, you can use the isset() function to check if a variable is set and not null before using empty(). 

// Check if a variable is set and not null before using empty()
if(isset($variable) && !empty($variable)) {
    // Do something if the variable is not empty
} else {
    // Do something if the variable is empty
}

Keywords

empty function PHP data validation null values boolean values

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