How can the error message "Es ist keine Checkbox angeklickt!" be resolved in PHP?

The error message "Es ist keine Checkbox angeklickt!" means that no checkbox has been checked in a form submission. To resolve this issue, you can check if the checkbox is checked before processing the form data. This can be done by using the isset() function in PHP to determine if the checkbox value is set in the $_POST array. 

if(isset($_POST['checkbox_name'])) {
    // Checkbox is checked, proceed with form processing
} else {
    // Checkbox is not checked, display an error message
    echo "Es ist keine Checkbox angeklickt!";
}

Keywords

error message checkbox PHP validation isset

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