How can one check if input fields are empty in PHP?

To check if input fields are empty in PHP, you can use the `empty()` function or check if the input fields are set and not equal to an empty string. This is important for form validation to ensure that required fields are not left blank. 

// Check if input fields are empty
if(empty($_POST['field1']) || empty($_POST['field2'])) {
    echo "Please fill out all required fields";
} else {
    // Process form data
}

Keywords

PHP input fields empty validation isset

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