If it is set, it means the checkbox was checked in the submitted form data, and the corresponding actions or logic for the checked checkbox can be executed. In this example, $_POST is used to check if the checkbox with the name "demoCheckBox" is present in the $_POST superglobal array. In your PHP script that processes the form data, you can use the isset() function to check if the checkbox value is set. In your HTML form, include a checkbox input element with a name attribute. To determine if a checkbox is checked using the isset() function, you can follow these steps: There are multiple ways “to read if a checkbox is checked in PHP ”. Using a value attribute and the in_array() function The appropriate method to use depends on how the checkbox is set up in the HTML form. In PHP, there are multiple methods to determine if a checkbox is checked. How to Read if a Checkbox is Checked in PHP It can interact with databases, handle form data, generate dynamic page content, perform calculations, manipulate files, and much more. PHP is embedded within HTML code and executed on the server, generating dynamic web content that is then sent to the user's web browser. It was created by Rasmus Lerdorf in the mid-1990s and has since become one of the most widely used programming languages for building dynamic websites and web applications. PHP: PHP (Hypertext Preprocessor) is a popular server-side scripting language primarily used for web development.
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