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Ext. 49884825[PHP]View PlainCopy Public function Logout () { $_session = Array ();//Clear Session value. If (Isset ($_cookie[session_name ()))) { //Determine if the client's COOKIE file exists, and if so, set it to expire. Setcookie (Session_name (),", Time ()-1,'/'); } Session_destroy (); //Clear the server's sesion file } When you log out, if the session or cookie is not clean, it ofte

middle of the test pass.When the value of the outer margin is negative, it can cause the floating element to move outside the parent element. It looks like a violation of the previous emission rules. The understanding of this number is to use a pen to calculate, this need to understand the CSS box model.What happens if a floating element overlaps with the content in the normal stream?In response to this problem, the CSS2.1 specification gives a clear

Multiple sites need to fill in the text box by default will give a default language, when the mouse clicks the text box can be the inside of the default text to clear, when the text is deleted and the focus left the text box when the default text to the text box. The code is as follows: The above code implements our request, when clicks the text box to be able to clear the text box the conten

In the use of the app, the first login requires the user to enter the password, some friends for the sake of security, the password setting is long, resulting in many times the password input errors, seriously affecting the user experience effect. This point mobile developers to do a good job, because the privacy of the phone is relatively strong, in the input password, you can display input, enhance accuracy, enhance the user experience degree. This, of course, comes at a cost, requiring additi

There is an HTML file on the client that submits the input, and the problem is that each time the refresh is pressed, it is not the whole page being loaded again, as if it were in the cache. How do you avoid this problem because the last value entered in the text box is not reloaded until you press RETURN to the entire page in the address bar? 1, add code to the head section in HTML: 2, clear the temporary cache 3,jquery Ajax to

The author introduces: Jiang Xiewei, IT company technical partner, it senior lecturer, CSDN Community experts, invited editors, best-selling authors, published books: "Hands-on teaching you architecture 3D Game Engine" Electronics publishing house and "Unity3d actual combat core technical details" Electronic industry publishing house and so on. CSDN Video URL: http://edu.csdn.net/lecturer/144 what is a buffer. The temporary storage area is called a buffer, and all standard input and output devi

A lot of friends have come across a problem that requires you to enter a BIOS password when setting up a computer startup mode. We know that the BIOS password is divided into two types, the user password and the system password, the former is used when setting up the BIOS, and the latter is required before the self-test input. Let's talk about the removal of the user's password. Because the system password is cleared, only two methods are known to date: The first, of course, is the discharge, th

How do I clear the Java cache on my Mac? Clear the Java cache to force the browser to load the latest version of Java applets and applications. Here's a small compilation of detailed steps on how to clear the Java cache on your Mac: 1. Click the Apple icon at the top 2. Click the System Preferences icon to open the 3. Click on the Java icon under the other s

Label:If encountering a binding snooping causes a slow execution schedule, want to clear a SQL execution plan, let it hard parse, for a long time did not find a direct operation share pool method (unless alter system flush Shared_pool), SQL can only be hardened by parsing the table DDL. Now finally found, using Sys.dbms_shared_pool.purge Can be used directly at 11g, but on 10g requires alter session set events ' 5614566 Trace name Context forever ' -

Label:A Redo log file is corrupted and the database is open; As a conSequence, database operations is stopped because archiving cannot coNtinue. What does would do to solve the problem?A. Clear the Redo log GroupB. Perform redo log file importC. Perform an incomplete recoveryD. Perform a redo log recovery using Recovery Manager (RMAN)E. Shut down the database and open the Noarchivelog modeAnswer:aThe database in the open state of the log is broken, an

Today debug Nginx A third-party purge cache module Proxy_cache_purge.During debugging, the cache already has data but it is not clear that the return is always 404.The last check for a long time, the reason for people three black lines ah.Original configuration at the beginningPut inAfter that.Change the order OK.However, the configuration was configured on the official website. The official website example is as follows:Sample configuration (separate

Because there are many types of overlays in a map, because of an overlay (which is generally custom), only one occurrence is allowed throughout the mapThe first thing to think about is that each time you create this type of overlay, clear this type of covering, a simple way to judge the type of cover instanceof, part of the code is as follows (red code is the focus):Poimarker.prototype =NewBmap.overlay (); PoiMarker.prototype.initialize=function(map)

When a file transfer function is recently implemented in a project, the following exception is always thrown in tomcat8 for each completed operation:Warning: couldn ' t clear tomcat cachejava.lang.NoSuchFieldException:resourceEntries at Java.lang.Class.getDeclaredField (Unknown Source) at Com.opens Ymphony.xwork2.util.LocalizedTextUtil.clearMap (Localizedtextutil.java:735) at Com.opensymphony.xwork2.util.LocalizedTextUtil.clearTomcatCache (Localizedte