How Do I Check if a Checkbox is Selected in PHP?

Reading the State of Checkboxes in PHP

When working with forms, it's often necessary to determine if a checkbox has been selected. Here's how you can read the checked state of checkboxes in PHP:

Suppose your HTML form contains a checkbox with the following code:

<input type="checkbox" name="test" value="value1">

Reading Checkbox State with isset()

To check if a checkbox has been selected, you can use the isset() function after submitting the form. Here's how:

isset($_POST['test'])

If the isset() function returns true, it means the checkbox has been checked.

Reading Checkbox Value

If you want to check the value of the checkbox, you can use the following code:

if ($_POST['test'] == 'value1') ...

This code checks if the value of the test checkbox is equal to value1. You can replace value1 with the expected value for the checkbox.

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