6miu盘搜

The simplest message board

zhaozj2021-02-16 50

1.1 The principle of the message board Let's take a look at how the message board is working in real life, imagine such a situation: You say good at home waiting for your girlfriend, but there is something to go out, so you decided to write one Leave a message to avoid being repaired when it comes back. Let's take a closer study: 1 idea to leave a message, think about a clever reason 2 Write a message 3 to post the message to the door, so your girlfriend can see actually in the network, the message board is also working: 1 Write a message on the page 2 Save the message 3 3 In the appropriate place, you will show a message to the appropriate person. The following is a schematic diagram of this simple message board: 1.2 Message Board's implementation Let us consider The implementation of these pages. Post.php is very simple, it only needs an from, it is OK.

Topic:

content:

</ textarea> </ p> <p> <input type =" submit "value =" submit "Name =" b1 "> <input type =" reset "value =" reset " Name = "b2"> </ p> </ form> </ html> If you don't understand the HTML code on the side, you will show that you are not familiar with HTML, please take a look at the HTML grammar. This code indicates a page: It can be seen that the HTML code on the upper side passes the "topic" and "content" to the page save.php; in Save.php We can use $ TEXTTITLE and $ TEXTCONTENT Get their value. Then let us conduct a second step, "save the message". The problem is how to save two variables passed from Post.php. There are two ways to save the variable for a long time: save it into a file or put it in the database. For a personal message board, use the database that has some small use of a large material, so we save the data in the form of a file. Lower is the file operation function we have to use: FOPEN (PHP 3, PHP 4> = 4.0.0) Fopen - Opens file or url description int focenter (string filename, string mode [, int us_include_path]) FLOCK PHP 3> = 3.0.7, PHP 4> = 4.0.0) Flock - Portable Advisory File Locking Description Bool Flock (int FP, Int Operation [, int Wouldblock]) FWRITE (PHP 3, PHP 4> = 4.0.0 FWRITE - BINARY-SAFE FILE WRITE Description Int Fwrite (int LENGTH) FCLOSE (PHP 3, PHP 4> = 4.0.0) fclose - Closes An Open File Pointer Description Bool Fclose (Int FP) Please check the PHP manual on the specific elaboration of the function. If you have not yet, please download it at http://www.php.net/distributions/manual/php_manual_en.chm. Now, we put the message:</p> <p><? php /// // this Web Will Save The Words U Leave .. //// $ ft = fopen ('Words.txt', "A "); FLOCK ($ ft, lock_ex); $ data = $ textTitle. "/ n". $ textContent; fwrite ($ ft, $ data); $ ok = fclose ($ ft); if ($ ok) Echo "Save the Txet SuccessFully ..."; It is not possible if Flock ($ ft, lock_ex) is not available, it locks the file before writing the file, which effectively avoids the error of multiple users while operating the file. Look at the directory, is there a text file called Words.txt? Open a look, it is really the data we just stored. In this way, Save.php is also achieved, and then the message is displayed. The simplest, you can make echo.php directly display Words.TXT, the method is to use the frame or redirect. Below we use the frame and redirection method to achieve echo.php <! - /////////////// -> <html> <HEAD > <title> echo.php </ title> </ head> <frameset rows = "100%, *" border = "0" frameborder = "0" frameespace = "0" framecolor = "# 000000> <frame src = "Words.txt" scrolling = "auto"> </ frameset> <noframes> <body> </ body> </ html> Since IE puts the TXT file as an HTML file operation, directly treat Words.txt as a one Frame webpage can be. Note Some people think this is a vulnerability of IE, because when you browse text files online, you often relax, you will not think that text files can actually be used as the HTML file, you can use the script to make damage. If you implement it with a redirect, JavasVriPT is required:</p> <p><! - /// echo.php: available javascript to show the file words.txt -> <script> location = "words.txt" </ script></p> <p>Note Of course, there is still other methods, such as using the Meta tag of the HTML file. In this way, we have completed a simplest message board.</p></div><div class="text-center mt-3 text-grey"> 转载请注明原文地址:https://www.9cbs.com/read-25654.html</div><div class="plugin d-flex justify-content-center mt-3"></div><hr><div class="row"><div class="col-lg-12 text-muted mt-2"><i class="icon-tags mr-2"></i><span class="badge border border-secondary mr-2"><h2 class="h6 mb-0 small"><a class="text-secondary" href="tag-2.html">9cbs</a></h2></span></div></div></div></div><div class="card card-postlist border-white shadow"><div class="card-body"><div class="card-title"><div class="d-flex justify-content-between"><div><b>New Post</b>(<span class="posts">0</span>) </div><div></div></div></div><ul class="postlist list-unstyled"> </ul></div></div><div class="d-none threadlist"><input type="checkbox" name="modtid" value="25654" checked /></div></div></div></div></div><footer class="text-muted small bg-dark py-4 mt-3" id="footer"><div class="container"><div class="row"><div class="col">CopyRight © 2020 All Rights Reserved </div><div class="col text-right">Processed: <b>0.042</b>, SQL: <b>9</b></div></div></div></footer><script src="./lang/en-us/lang.js?2.2.0"></script><script src="view/js/jquery.min.js?2.2.0"></script><script src="view/js/popper.min.js?2.2.0"></script><script src="view/js/bootstrap.min.js?2.2.0"></script><script src="view/js/xiuno.js?2.2.0"></script><script src="view/js/bootstrap-plugin.js?2.2.0"></script><script src="view/js/async.min.js?2.2.0"></script><script src="view/js/form.js?2.2.0"></script><script> var debug = DEBUG = 0; var url_rewrite_on = 1; var url_path = './'; var forumarr = {"1":"Tech"}; var fid = 1; var uid = 0; var gid = 0; xn.options.water_image_url = 'view/img/water-small.png'; </script><script src="view/js/wellcms.js?2.2.0"></script><a class="scroll-to-top rounded" href="javascript:void(0);"><i class="icon-angle-up"></i></a><a class="scroll-to-bottom rounded" href="javascript:void(0);" style="display: inline;"><i class="icon-angle-down"></i></a></body></html><script> var forum_url = 'list-1.html'; var safe_token = 't0vNQXVSfkAfk3T6iIJMnpXJtYCwKyAvsp_2F1wHBT_2Fp29hZ4h02ZWzZ_2FzRtDBnp3CV_2BgpPun6Lp6Mapt3SJpcZw_3D_3D'; var body = $('body'); body.on('submit', '#form', function() { var jthis = $(this); var jsubmit = jthis.find('#submit'); jthis.reset(); jsubmit.button('loading'); var postdata = jthis.serializeObject(); $.xpost(jthis.attr('action'), postdata, function(code, message) { if(code == 0) { location.reload(); } else { $.alert(message); jsubmit.button('reset'); } }); return false; }); function resize_image() { var jmessagelist = $('div.message'); var first_width = jmessagelist.width(); jmessagelist.each(function() { var jdiv = $(this); var maxwidth = jdiv.attr('isfirst') ? first_width : jdiv.width(); var jmessage_width = Math.min(jdiv.width(), maxwidth); jdiv.find('img, embed, iframe, video').each(function() { var jimg = $(this); var img_width = this.org_width; var img_height = this.org_height; if(!img_width) { var img_width = jimg.attr('width'); var img_height = jimg.attr('height'); this.org_width = img_width; this.org_height = img_height; } if(img_width > jmessage_width) { if(this.tagName == 'IMG') { jimg.width(jmessage_width); jimg.css('height', 'auto'); jimg.css('cursor', 'pointer'); jimg.on('click', function() { }); } else { jimg.width(jmessage_width); var height = (img_height / img_width) * jimg.width(); jimg.height(height); } } }); }); } function resize_table() { $('div.message').each(function() { var jdiv = $(this); jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>'); }); } $(function() { resize_image(); resize_table(); $(window).on('resize', resize_image); }); var jmessage = $('#message'); jmessage.on('focus', function() {if(jmessage.t) { clearTimeout(jmessage.t); jmessage.t = null; } jmessage.css('height', '6rem'); }); jmessage.on('blur', function() {jmessage.t = setTimeout(function() { jmessage.css('height', '2.5rem');}, 1000); }); $('#nav li[data-active="fid-1"]').addClass('active'); </script>