What are the potential pitfalls of using the empty() function in PHP to check for empty input fields?

Using the empty() function in PHP to check for empty input fields can be problematic because it considers variables with a value of 0 or "0" as empty, which may not be the desired behavior. To solve this issue, you can use the isset() function in conjunction with empty() to first check if the variable is set before checking if it is empty. 

if(isset($_POST['input_field']) && !empty($_POST['input_field'])) {
    // Input field is not empty
    $input_value = $_POST['input_field'];
} else {
    // Input field is empty
    // Handle empty input field here
}

Keywords

empty function PHP input fields validation error handling

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