How to get checked and unchecked checkbox array value in PHP?

#php #webdev #webperf

This process has 5 steps
Step 1: For getting value of a checked checkbox
Code:

<form action="#" method="post">
<input type="checkbox" name="gender" value="Male">Male</input>
<input type="checkbox" name="gender" value="Female">Female</input>
<input type="submit" name="submit" value="Submit"/>
</form>
<?php
if (isset($_POST['gender'])){
echo $_POST['gender']; // Displays value of checked checkbox.
}
?>

Step 2: For getting values of multiple checked checkbox
Code:

<form action="#" method="post">
<input type="checkbox" name="check_list[]" value="C/C++"><label>C/C++</label><br/>
<input type="checkbox" name="check_list[]" value="Java"><label>Java</label><br/>
<input type="checkbox" name="check_list[]" value="PHP"><label>PHP</label><br/>
<input type="submit" name="submit" value="Submit"/>
</form>
<?php
if(isset($_POST['submit'])){//to run PHP script on submit
if(!empty($_POST['check_list'])){
// Loop to store and display values of individual checked checkbox.
foreach($_POST['check_list'] as $selected){
echo $selected."</br>";
}
}
}
?>

Step 3: php_checkbox.php (HTML code)
Code:

<!DOCTYPE html>
<html>
<head>
<title>PHP: Get Values of Multiple Checked Checkboxes</title>
<link rel="stylesheet" href="css/php_checkbox.css" />
</head>
<body>
<div class="container">
<div class="main">
<h2>PHP: Get Values of Multiple Checked Checkboxes</h2>
<form action="php_checkbox.php" method="post">
<label class="heading">Select Your Technical Exposure:</label>
<input type="checkbox" name="check_list[]" value="C/C++"><label>C/C++</label>
<input type="checkbox" name="check_list[]" value="Java"><label>Java</label>
<input type="checkbox" name="check_list[]" value="PHP"><label>PHP</label>
<input type="checkbox" name="check_list[]" value="HTML/CSS"><label>HTML/CSS</label>
<input type="checkbox" name="check_list[]" value="UNIX/LINUX"><label>UNIX/LINUX</label>
<input type="submit" name="submit" Value="Submit"/>
<!----- Including PHP Script ----->
<?php include 'checkbox_value.php';?>
</form>
</div>
</div>
</body>
</html>