php_bad_boy
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Hey creatix, I would write a PHP code which uses a $_GET['variable'] to access the chamber number, and then compare this with a random number. Then finally echo the message 'BOOM' or 'You made it...'. Here's an example: $user_chamber = intval($_GET['my_chamber']); $bullet_pos = rand(1,6); if ($bullet_pos == $user_chamber) { echo "BOOM! (bullet was in chamber " . $bullet_pos . ")"; } else { echo "You made it bro :-) (bullet was in chamber " . $bullet_pos . ")"; } Then you've got to write the AJAX. It's a simple program so I would just go with an HTML file with an embedded JavaScript. Here's what I came up with. If you need more help have a look at this cool tutorial: http://www.w3schools.com/php/php_ajax_php.asp Notice the javascript function included in the head, it is called by the trigger button. The form contains a select element and a button element. I've chose the button element rather than a submit element because we don't want to reload the whole page, just update it using AJAX. <html> <head> <title>Russian roulette</title> <script> function pullTrigger(chamber) { if (window.XMLHttpRequest) { xmlhttp = new XMLHttpRequest(); } else { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { document.getElementById("result").innerHTML = xmlhttp.responseText; } } xmlhttp.open("GET", "roulette.php?my_chamber=" + chamber, true); xmlhttp.send(); } </script> </head> <body> <div id="result">Let's play a little game...</div> <form> <select id="pistol"> <option value="1">First chamber</option> <option value="2">Second chamber</option> <option value="3">Third chamber</option> <option value="4">Forth chamber</option> <option value="5">Fifth chamber</option> <option value="6">Sixth chamber</option> </select> <input type="button" value="Pull the trigger" onclick="pullTrigger(document.getElementById('pistol').value)"> </form> </body> </html>
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Hi Jason, I think you might be right. I'd be tempted to print all the $_POST['article_title'] variables where preg_match is returning true and hopefully you'll spot the problem. if(preg_match("/[^a-zA-Z0-9\-\_\,\!\?\.\'\"\ \/]+/i",$_POST['article_title'])) { $err[]='<p class="error" style="color: #ed1c24;">Your Title contains invalid characters! </p>'; echo $_POST['article_title']; }
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Hi Jason, Try running this code snippet, as you can see the preg_match returns 0 for a string containing both the single and double quotes. <?php $my_string = "some ''''' \"\"\" string"; echo ( preg_match("/[^a-zA-Z0-9\-\_\,\!\?\.\'\"\ \/]+/i",$my_string) ) ?> Can you have a look at the values of the $_POST['article_title'] variables that are getting passed to the preg_match function?
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The code defines a class called User and then creates an object instance of that class called $brad. Finally it calls the getAge() method of the $brad object and the result is that it prints the number 31. A class is a template which is used to create objects. Objects are like bubbles which encapsulate data and functions (also called methods). The data and functions can be defined as public which means they can be accessed from anywhere in your program, or as private which means they are hidden away and can only be accessed by the object itself. The __constructor() function is a special function, it is always called when a new object is created. The getAge() function is a normal function, it only runs when you decide to call it from somewhere else in your program (the final line). The $this variable is a way for an object to refer to itself. What's the point of all this? Say you wanted to have several users, you've now built the 'User' class template and it's really easy to create them all. For example let's create Bob who is 27 and Jane who is 33: $bob = new User(27); $jane = new User(33); Try this video where some of the concepts are explained: