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August 29, 2015 13:57
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form spam protection - the easy way
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| $('form :text').keydown(function(){ | |
| if (!$(this).parents('form').children('.pl').length) { | |
| var d = new Date(); | |
| var n = d.getDay()*d.getDate(); | |
| $(this).parents('form').append('<input type="hidden" name="pl" class="pl" value="'+n+'">'); | |
| } | |
| }); |
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| <?php | |
| if ( $_POST && isset($_POST['pl'] && $_POST['pl']== date('w')*date('j') ) ) { | |
| // treat form | |
| } else { | |
| die('you just died. insert coin to continue'); | |
| } |
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BIG disadvantage (i admit) is that without JS sending of the form is not possible. I was thinking of combing his with a php hidden field that's inserted if a valid referrer page is found.