PHP

PHP comes with a function to generate a unique id: uniqid (), which is based on the number of microseconds of the current time. its usage is as follows: echouniqid (); // 13-bit string echouniqid (& quot; php _ & quot; PHP comes with a function to

I am using wampserver2.2, I did not find the go-pear.bat file under the php directory, so download the go-pear.phar method php directory like my: D: \ soft \ wamp \ bin \ php \ php5.3. I am using wampserver 2.2, I did not find the go-pear.bat file

PR (PageRank) is one of the important criteria for Google to measure a website, thus affecting the ranking of Google search results. Google officially provides APIs for querying PR, such as site prvalue: http: // toolbarqueries PR (PageRank) is one

The basic knowledge of phpcookie is not mentioned much. the use of cookies has always been controversial. it cannot protect the privacy of users, and users can disable cookies, which cannot implement the functions you want. Phpcookie features and

Can Session be used after the browser in PHP disables cookies? Let's do some tests and then explain the principles. I have created two files, session_test.php and session_a.php, which are: & amp; lt ;? Php Can Session be used after the browser in

I wrote an article a few days ago, using php alone for scheduled task execution, but the efficiency is not good. it is more reasonable to use crontab for linux. First, let's talk about cron, which is a scheduled execution tool in linux. Users other

Because PHP is mainly used for web services, few people use PHP in the command line. do you remember when you configured the java environment? This is also true for running PHP in the command line. Configure the php.exe environment you have

PHP uses basic GD and Image functions to implement many Image processing functions. With more open-source class libraries, you cannot forget the basics. & Amp; nbsp; how PHP generates thumbnails and watermarks: & amp; lt ;? Phpheader ('content-T PHP

I want to see the efficiency of PHP regular expression operations and DOM operations. I captured about 600 pieces of data in 36kr for testing. Data table structure: CREATETABLEIFNOTEXISTS '36kr '('id' int (11) I want to see the efficiency of PHP

I haven't written a blog for several days. I will continue to write some public platform series development tutorials later. Today is also my first development on the public platform. The development interface developed on the public platform is

1. what is a QR code: the two-dimensional code (2-dimensionalbarcode) records the data symbol information by using a specific ry that is regularly distributed on a plane (two-dimensional direction. Common codes in many types of two-dimensional codes

When PHP processes ajax return values, if return, for example, return $ result, fails, echo $ result is okay. The reason is as follows: 1. ajax requests read the return values from the server, and these return values are required When PHP processes

First, let's take a look at why the error Erroratoffset occurs in PHPunserialize: & amp; lt ;? Php // My page is UTF-8 encoded result: a: 2: {s: 2: & quot; en & quot; s: 21: & quot; h First, let's see why the Error at offset Error occurs in PHP

The page is usually blank when a fatal error occurs in the program. it is not difficult to get the error information! It mainly uses two functions: error_get_last () to obtain the last error message: Structure: Array ([type] = & amp; g The page is

1. command mode concept: pass requests from the client into an object so that you can parameterize the customer with different requests. Used for & amp; ldquo; behavior requestor & amp; rdquo; decoupled from & amp; ldquo; behavior implementer & amp;

1. policy mode concept policy mode each algorithm is encapsulated into an independent class with a common interface for a group of algorithms. This mode allows algorithm changes to be independent of customers who use algorithms. So as to make the

This is a question I encountered in the php interview questions. The Singleton mode literally means that a class has only one instance. the benefits of doing so are great, such as database connection, we only need to instantiate it once, instead of

Singleton mode ensures that only one instance in a class is globally accessed. when you have a group of global objects that are globally accessed, you may need to use the registry mode ), it provides a solution to systematically store and manage

Experienced programmers often use two functions because they can quickly process arrays and see their differences: array_map () returns the array after the user-defined function acts. Array_walk () uses a callback function for each function in the

Some operations, such as sending emails after user registration, logging, and other time-consuming operations can be converted to asynchronous operations! When PHP runs in FastCGI mode, the fastcgi_finish_request () function is provided. For more