[ Posted by Amar Beslija ] How to use white lists in PHP. https://lab387.com
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| <html> | |
| <head> | |
| <title>White List</title> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <form action="" method="POST"> | |
| <label>Choose your color:</label> | |
| <select name="color"> | |
| <option value="red">Red</option> | |
| <option value="blue">Blue</option> | |
| <option value="green">Green</option> | |
| <option value="black">Not so good option</option> | |
| </select> | |
| <input type="submit" value="Send your color"> | |
| </form> | |
| <?php | |
| $colors = ["red", "blue", "green"]; | |
| if(isset($_POST["color"])){ | |
| $color = $_POST['color']; | |
| $color = htmlspecialchars($color); | |
| if(in_array($color, $colors)){ | |
| // Proceed with data processing | |
| echo "Color " . $color . " is good!"; | |
| }else{ | |
| // Do not proceed with data processing | |
| echo "Color " . $color . " is not good!"; | |
| } | |
| } | |
| ?> | |
| </body> | |
| </html> |
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