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Cache class_cache.php:Class Cache{var $cacheDirectory;var $cacheDuration = 3600;var $cacheFilename;function cache ($cacheDuration =3600, $cacheDirectory = './cache '){$this->cacheduration = 0;$this->cachedirectory = '. ';$this->cachefilename =

Implement the operation of increasing, deleting and changing the commodity informationI. Importing configuration files and function library filesRequire ("dbconfig.php");Require ("functions.php");Second, connect MySQL, select database$link =

1. Open File (Man 2 open View)int open (const char *pathname, int flags); //pathname file name (path); Flags open mode, O_rdonly, O_wronly, O_RDWRint open (const char *pathname, int flags, mode_t mode);This function is typically used to create new

A leetcode OJ on the topic, requires the design of an LRU (Least recently used) algorithm, the topic is described as follows: Design and implement a data structure for Least recently Used (LRU) cache. It should support the following

Heap overflow is related to the heap's memory layout, and to understand heap overflow, it is first to be clear what the heap memory layout of malloc () is, and what it will look like after the free () operation.Solve the first problem: How to lay

An RDB is another form of persistence for Redis, which is equivalent to a timed snapshot and also to the snapshot +redo log in master-slave synchronization. Redis does not require a lock when it makes an RDB, which is done by using the parent-child

**************************************************************************************************The POSIX semaphore semaphore is a primitive that is used to provide synchronization between different threads of different processes or a given

/** Website anti-IP attack code (ANTI-IP attack codes website) 2010-11-20,ver2.0*mydalle.com Anti-refresh mechanism*design by Www.111cn.net*/ Query prohibits IP$ip =$_server[' remote_addr '];$fileht = ". Htaccess2";if (!file_exists ($fileht))

Introduction: This is the introduction of PHP and file operations related to the system functions, these functions are also very important, the following tianya is still more commonly used for detailed illustrations. basename-returns the file name

Here are two methods for MySQL database backup/restore. Method One: Query ($sql); ///Make the generated temporary backup files together $outfile = Date ("y-m-d"). SQL "; if (File_exists ($dbdir. $outfile)) @unlink ($dbdir. $outfile); $FPR = fopen (

1. Delete blank rows or columns You can delete all blank rows from a selection, the current worksheet, the selected worksheet, or all worksheets. If you have more than one table in your workbook that may have empty rows, it is time-consuming to

Excel tables sometimes have hyperlinks, no use of their hyperlinks is annoying, only a few hyperlinks to say, but if you encounter such a large area of hyperlinks how to do? This article will teach you how to remove hyperlinks in Excel tables in

We know that the temporary declarations of variables are stored in memory, even static variables, after the script is finished will be released, so, want to save the content of a variable for a long time, one way is to write to the file, put on the

For the Web page Editor to do the project is a very useful editor, greatly reduce the burden on developers, feel Kindsoft is a good choice, so also in constant use. under the face of some simple configuration to sum up： The first is to import the

This article is used to record common file manipulation functions in Linux programming, including system calls and library functions, for review.One problem with direct use of the underlying system calls for input and output operations is that they

Share the following PHP read the contents of several methods, different, and we encourage each other.Example code 1: Get content with file_get_contents in get$url = ' http://www.jbxue.com/';$html =file_get_contents ($url);Print_r ($http

Mathematical functions1.abs (): Absolute value$abs = ABS (-4.2); 4.2 Numeric Absolute number2.ceil (): Into a method to take the wholeecho ceil (9.999); 10 floating point number in one rounding3.floor (): Rounding off the Rounding methodecho Floor (9

Send a simple example first Copy Code code as follows: if (!is_dir (' txt '))//Determine if TXT is a folder directory { mkdir (' txt ');//Create a folder directory named txt $open =fopen (' txt/in.txt ', ' w+ ');//Open file in

C language Link () function: Establish a File connectionheader file: #include To define a function: int link (const char * oldpath, const char * newpath); Function Description: Link () Creates a new connection (hard

basename-returns the file name part of the pathdirname-returns the directory part of the path Copy Code code as follows: String basename (String $path [, String $suffix]) String DirName (String $path) Example: Copy