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| 1 | <?PHP | |
| 2 | ||
| 3 | session_start(); | |
| 4 | if(!isset($_SESSION['value'])) {
| |
| 5 | $_SESSION['value'] = 0; | |
| 6 | } | |
| 7 | ||
| 8 | if(isset($_GET['action'])) {
| |
| 9 | switch($_GET['action']) {
| |
| 10 | case 'add': | |
| 11 | $_SESSION['value'] ++; | |
| 12 | break; | |
| 13 | case 'remove': | |
| 14 | $_SESSION['value'] --; | |
| 15 | break; | |
| 16 | case 'reset': | |
| 17 | $_SESSION['value']= 0; | |
| 18 | break; | |
| 19 | } | |
| 20 | ||
| 21 | header("Location: index.php");
| |
| 22 | exit(); | |
| 23 | } | |
| 24 | ?> | |
| 25 | ||
| 26 | <html> | |
| 27 | <head> | |
| 28 | <title>Storing user values in session</title> | |
| 29 | </head> | |
| 30 | <body> | |
| 31 | <p>The current value is: <?PHP echo $_SESSION['value']; ?></p> | |
| 32 | ||
| 33 | <script> | |
| 34 | document.onkeyup = checkKey; | |
| 35 | ||
| 36 | function checkKey(e) {
| |
| 37 | - | var location = document.URL; |
| 37 | + | var location = '/index.php'; |
| 38 | e = e || window.event; | |
| 39 | ||
| 40 | if (e.keyCode == '13') {
| |
| 41 | - | window.location = location + '/?action=reset'; |
| 41 | + | window.location = location + '?action=reset'; |
| 42 | // up arrow | |
| 43 | } | |
| 44 | else if (e.keyCode == '38') {
| |
| 45 | - | window.location = location + '/?action=add'; |
| 45 | + | window.location = location + '?action=add'; |
| 46 | // up arrow | |
| 47 | } | |
| 48 | else if (e.keyCode == '40') {
| |
| 49 | - | window.location = location + '/?action=remove'; |
| 49 | + | window.location = location + '?action=remove'; |
| 50 | // down arrow | |
| 51 | } | |
| 52 | else if (e.keyCode == '37') {
| |
| 53 | // left arrow | |
| 54 | } | |
| 55 | else if (e.keyCode == '39') {
| |
| 56 | // right arrow | |
| 57 | } | |
| 58 | ||
| 59 | } | |
| 60 | </script> | |
| 61 | </body> | |
| 62 | </html> |
