PHP

Php generates a QR code and a QR code with a logo in the middle. No one knows me when I wrote a QR code two years ago. Later, there were more apps scanning QR codes on mobile phones, which changed the times. Thanks to smartphones and. No one knows

PHP kernel research: HASH tables and variables. In PHP, all data, regardless of variables, constants, classes, and attributes, are implemented using the Hash table. First, let's talk about the HASH table typedefstructbucket {ulongh; *

Php design pattern-UML class diagram. Preface I have been using php for more than two years. I have prepared and written some frequently-used design patterns based on my own practical experience. of course, I should first understand the design

Php verifies the regular expression of the phone number and phone number. Functionfuncphone ($ str) phone number regular expression test {return (preg_match (^ (d {3}) | (d {3 }-))? (0d {2, 3}) | 0d {2, 3 }-)? [1-9] d {6, 8 }$, $ str ))? True: false;

PHP upload class upload. php Usage method. What we bring to you today is the specific code as follows :? Php *** my file Upload class ** unfinished functions: * 1. determine whether the target directory exists * 2. what we bring to you today when

Functions of the PHP function crypt. We know that the data encryption function is available. today we will introduce one of the functions that can implement data encryption: the PHP function crypt (). As the PHP function crypt (), we know that there

PHP function shuffle () to achieve re-sorting. In shuffle -- disrupt the array: the shuffle (arrayarray) PHP function shuffle () disconnects an array (the order of randomly arranged units. Note: The PHP function shuffle () is the unit in the

Analysis of PHP function extract () application skills. For example, you can easily extract $ _ POST or $ _ GET elements. you cannot assign one-to-one values to the content submitted in the form. you can directly use the following code: form.html

Several common Time application methods in PHP. In PHP, the default setting is the standard Greenwich Mean Time (zero time zone). therefore, to obtain the local time, you must modify the default time zone of PHP (eight time zone, unless you are a

The difference between the date function and gmdate function in php. PHP has two time formatting functions: date () and gmdate (). the description in the official document is date format a local time/date gmdate format a GMTUTC date/time, two time

Phpmysql data import and export, data table structure import and export. To import and export data, *********************************** * ******************* contains the Mysql database operation file require_once (Mysql implements data import and

Phpmysql user registration and login code. Phpmysql user registration and login code is a user registration and login code implemented using php and mysql databases. the function is also a simple and practical user registration program. In addition,

Php checks the uploaded file type and image size code. There are two examples in this article to check the Upload file type and the size of the uploaded image. I originally wanted to separate the two files, but I thought it would be better to put

PHP Tutorial: PHP single-piece mode combined with command chain mode. Beginners must have a lot of questions about the design pattern. just this weekend, I took some time to write an article about how to create the core of the system by combining

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Use the sqlite3 database in Codeigniter. It is easy to use the mysql database in Codeigniter. you only need to configure the database name and account password in applicationconfigdatabase. php. Changing to sqlite makes it easy to use mysql

Use the PHP script to write the Daemon program. What is a Daemon process? this is an interesting concept. daemon is an English genie, just like what we often see in Disney animation. some of them will fly, some will not What is a Daemon

Use PHP to implement mutual transfer of short domain names. Copy the code as follows: *** generate nbsp for a short domain name; * classBuild_URL {private $ mem; private $ base_urlxxx.com; publicfunction _ construct () {$ mem_confarray ( The code

Discussion: Conversion between array2xml, xml2array, and xml and array. Php often encounters this situation when working as a backend server. it needs to parse xml files from the foreground and return the data in xml format. in this case, this is

Go deep into the arraymultisort sorting principle. Copy the code as follows :? Php $ data [] array (volume67, edition2); $ data [] array (volume86, edition1); $ data [] array (volume85, edition6); $ data [] The code is as follows: $ Data [] =