uniqid

Six methods for renaming uploaded images in php /* Com_create_guid () is a function supported by php5. you can customize unsupported versions by yourself; */ Function guid (){ If (function_exists (

/* Com_create_guid () is a feature supported by the PHP5 version and can be defined on its own for unsupported versions; */ function guid () { if (function_exists (' Com_create_guid ')) { return Com_create_guid ();

The use cases for generating unique IDs are very common, such as temporary cache file names, temporary variables, and temporary security codes. The uniqid () function is based on the current time in microseconds, generate a unique ID. Because the

One, applicable scenario: cannot use the self-growth number returned from the database to rename the uploaded image. This is determined by the process of picture or file upload.General image upload process is to upload images to the server, after

This article mainly introduces the PHP implementation blog, the forum image of the anti-theft chain method, involving the PHP string combined with the session to determine the relevant operating skills of the picture, the need for friends can refer

Research and summary of six kinds of PHP image uploading and renaming scheme First, the application scenario Unable to rename the uploaded image using the self-growth numbers returned from the database. This is determined by the process of picture

This article describes the PHP implementation of blog, forum pictures anti-theft chain method. Share to everyone for your reference, specific as follows: Anti-Theft chain of a lot of ways, I would like to say that I have to put hotlinking

Php provides several solutions to generate a unique id. I checked it online and found many methods: 1. md5 (time (). mt_rand (); this method has a certain probability that there will be duplicates. 2. the php built-in function uniqid () has been

There's a lot of ways to check it online. 1, MD5 (Time (). Mt_rand (1,1000000)); This method has a certain probability that there will be repetition 2. PHP built-in function uniqid () The Uniqid () function generates a unique ID based on the

$salt = base_convert(sha1(uniqid(mt_rand(), true)), 16, 36);$fields = array(‘salt‘ => $salt,‘password‘ => $this->getPasswordEncoder()->encodePassword($password, $salt),); 1. mt_rand (); PHP mt_rand () function PHP Math Function Definition and usage

PHP developers should be aware that PHP has a lot of built-in functions, mastered them, can help you in doing PHP development more handy, this article will share 8 development of the necessary PHP features, all are very practical, I hope you can

1. Any number of parameters of the function You may know that PHP allows you to define a function of a default parameter. But you may not know that PHP also allows you to define a function of an entirely arbitrary parameter Here is an example of a

Even if you're using PHP for years, you'll stumble across functions and functions that you never knew about. Some of them are very useful, but not fully utilized. Not everyone will read the manual and function references from beginning to end. 1,

This article will share eight essential PHP functions, all of which are very useful: passing any number of function parameters and using glob () search for files, obtain memory usage information, obtain CPU usage information, obtain system constants,

Programmers who have developed PHP should be clear that PHP has many built-in functions and can master them to help you better develop PHP, this article will share eight essential PHP functions, all of which are very practical and I hope all PHP

The following small series will introduce nine php functions and features that you must know and can use. Very practical! If you need a friend, you can refer to the following nine useful functions in PHP. do you know you have used them? 1. any

This article mainly introduces the common functions of eight PHP programmers. if you need a friend, you can refer to the programmers who have developed PHP. it should be clear that PHP has many built-in functions to master them, this article will

Programmers who have developed PHP should be clear that PHP has many built-in functions and can master them to help you better develop PHP, this article will share eight essential PHP functions, all of which are very practical and I hope all PHP

1, pass any number of function parameters We're in. NET or Java programming, the number of general function parameters is fixed, but PHP allows you to use any number of parameters. The following example shows you the default parameters for PHP

Cookies are often used to identify users. A cookie is a small file that a server leaves on a user's computer. This computer sends a cookie whenever a page is requested by the same computer through a browser. With PHP, you can create and retrieve the