| Modding your wii console | Automatic Theme Changer in PHP |
| Submitted On: Tuesday, November 10, 2009 at 8:21:52 AM |
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PHP Text Based Article System Contains complete comments. <?PHP /*-------------------------------------------------------------------------- | These lines will get the information from the URL, for handling the data. | | There is some filtering here to avoid some kinds of attacks. | | To reduce processing time, the POST variables are only handled when the | | script is in "post" mode. | --------------------------------------------------------------------------*/ $mode = $_GET['mode']; $articleID = preg_replace("/[^0-9]/i", "", $_GET['id']); /*-------------------------------------------------------------------------- | SWITCH selects the variable that CASE will use. Here, we're using CASE to | | determine what mode we're in. This allows us to use only one script to | | handle an entire system -- easy for updates, and cleaner for your htdocs | | folder. --------------------------------------------------------------------------*/ SWITCH ($mode) { CASE "add": { /*-------------------------------------------------------------------------- | Here, we'll generate the form that people will create an article in. | | The action= portion tells the script to point to itself, but in post mode | | This allows you to name your file whatever you like. | --------------------------------------------------------------------------*/ echo " <form action='" . $_SERVER['PHP_SELF'] . "?mode=post' method='post'> <label>Title:</label> <input type='text' name='title' /><br /> <label>Author:</label> <input type='text' name='author' /><br /> <label>Body:</label> <textarea cols='25' rows=20' name='body'></textarea><br /><br /> <input type='submit' value='Add Article' /> </form>"; break; } CASE "view": { /*-------------------------------------------------------------------------- | Here, the script will open the article, and do some basic formatting to | | the layout. Also convert the s to <br />s. | --------------------------------------------------------------------------*/ if (file_exists($articleID . ".txt")) { $file = fopen($articleID . ".txt","r"); $title = trim(fgets($file)); $author = trim(fgets($file)); $time = trim(fgets($file)); $body = str_ireplace(" ", "<br />", trim(fgets($file))); fclose($file); echo "<h1>" . $title . "</h1><hr />Posted By: " . $author . "<hr />" . $body; } else { echo "Oops! That article doesn't exist!"; } break; } CASE "post": { /*-------------------------------------------------------------------------- | This is where the code starts getting complex. Here, we're writting to a | | text file, but we have to make sure the data is safe to post. We'll start | | by cleaning out and formatting the variables first. | --------------------------------------------------------------------------*/ $title = strip_tags($_POST['title']); $author = strip_tags($_POST['author']); $body = str_replace("rn", "",str_ireplace("<br />", " ",nl2br(strip_tags($_POST['body'])))); /*-------------------------------------------------------------------------- | As you can see, the filtering for $body is the most complicated. What all | | those extra parts do, is convert "newlines" (or when you pressed enter in | | the textbox) to a pseudo-tag . This makes it safe to put into your | | text file database, because each field is seperated by an ENTER | --------------------------------------------------------------------------*/ /*-------------------------------------------------------------------------- | Below, we're going to use a UNIX timestamp to name the text file, which | | will become the ID of the file, and help us assess the time it was posted | --------------------------------------------------------------------------*/ $posttime = time(); if (file_exists($posttime . ".txt")) { /*-------------------------------------------------------------------------- | Because we're using the timestamp as the filename, it is possible that | | two people could post at the same time. This is called a "race condition" | | and is quite a problem for programmers. You could use a random number, | | but then there's more of a risk of overwritting other files. This code | | checks to see if the file exists, and if it does, it asks the author to | | resubmit, thus giving it a new ID number due to the new timestamp. | --------------------------------------------------------------------------*/ echo "OOPS! Minor error, please hit back and try again!"; die; } /*-------------------------------------------------------------------------- | Okay, now we're going to actually write the file. As you can see, there's | | a rn at the end of each file. For Windows servers, this means "return | | carriage" and "new line"...Kinda like a typewritter. For Unix based | | servers, change it to r, and Macint...
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| Tags: PHP, Text-Based, article, system |
| Tuesday, November 10th, 2009 at 8:24:24 AM #23591 |
 Toasty SysOp Level 40 Posts: 7,388 Submissions: 227  | Here's the source code since some BBCode here made it so this won't work correctly. |
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| Tuesday, April 27th, 2010 at 9:49:48 AM #41756 |
 Source421 Member 'hnnggg' Level 19 Posts: 1,308 Submissions: 38 | Can you re-up that source code? Or does everything work now? |
| Tuesday, April 24th, 2012 at 7:35:46 AM #55161 |
 ColinFiat Site Admin 'JavaScript' Level 26 Posts: 1,359 Submissions: 89 | The Year 2038 Problem is a programming error that may cause important computer software to fail before the year 2038. The event affects all software that store system time as a signed 32-bit integer. These systems interpret time as the number of seconds since Thursday January 1, 1970 and the furthest time that can be represented this way is 03:14:07 UTC on Tuesday, January 19, 2038. All times beyond this moment will wrap around and be stored internally as a negative number, which will cause these 32-bit integer systems to interpret the date as 1901, rather than 2038. This will create erroneous calculations and system failure. Most all 32-bit Unix-like systems store and manipulate time in this format, called Unix time. For this reason, the year 2038 problem is often referred to as the Unix Millennium Bug. |
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