How can you check if a checkbox is marked in PHP?

To check if a checkbox is marked in PHP, you can use the isset() function to determine if the checkbox value has been submitted in the form data. If the checkbox is checked, its value will be included in the form data, and isset() will return true. You can then perform further actions based on whether the checkbox is marked or not. 

if(isset($_POST['checkbox_name'])){
    // Checkbox is marked
    // Perform actions here
} else {
    // Checkbox is not marked
    // Perform alternative actions here
}

Keywords

PHP checkbox checked isset form submission

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