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hello guys how are you today i am not good with function so i want to ask a question how can i do that by function i have tried but i am Failure also how can i protect the input by this way by using mysql_real_esacpe,strip_tags ....

$getidtopic=$_GET['id_topic'];
    function isint (){
    global $getidtopic;
    if (!is_int($getidtopic)){
    return true;
    }else if (is_int($getidtopic)) {
    return false;
    }
    }
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Last Post by diafol
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