PHP Tutorials

CSV is a common, relatively simple file format that is widely used by users, businesses, and science. The most widespread application is the transfer of tabular data between programs, which themselves operate in incompatible formats (often in

Stock information We do the financial site is only the data collection portal station can not generate their own stock information, this will be used to crawl stock station data, the following we take a look at the PHP command line to collect all

FLV is the short name of Flash video, FLV streaming media format is a new video format, all called Flash video. Because it forms a very small file, loading speed is very fast, so that the network to watch video files become possible, it has

This article mainly describes the PHP use of cookies to remember the login status, this article with the most primitive way to explain how to realize the login status, give 3 steps and specific implementation code, the need for friends can refer to

This function is automatically loaded when the PHP kernel initializes the module, so that the registration of the Stdclass class is executed. The Stdclass class is a class that has no member variables and no member methods. All of its magic methods,

One dollar participle: refers to each word in the sentence into words, by word segmentation, not to combine, similar to English words. UTF8 encodes the next character if the first character ASCII code is not greater than 192, it only accounts for 1

This article mainly introduces PHP's method of obtaining gender and birth date from ID card. Have a good reference value, follow the small series together to see it If you don't say much, look at the code: Gender and Birthday $birth = strlen

PHP Gets the Remote Web page content function when the same domain name corresponds to multiple IPs The FGC is simply read and encapsulates everything. Fopen also carries out some encapsulation, but requires you to iterate through all the

The Clearstatcache () function clears the file state cache. PHP caches the return information of some functions in order to provide higher performance. But sometimes, for example, if you check the same file multiple times in a script and the file

The English literal of the socket is "hole" or "socket". As the BSD UNIX process communication mechanism, take the latter one meaning. Often also referred to as a "socket," which describes IP addresses and ports, is a handle to a communication chain

Scandir () returns an array of files and directories in the specified directory. returns an array of files and directories if successful. The failure returns FALSE. If directory is not a directory, the e_warning level error is thrown.

In the development process, often because the form error and return to the page when the information is missing, in order to support page bounce, can be implemented in two ways. First, use the header method to set the message header Cache-control

　　 PHP7 above to install and use this data structure extension, the installation is relatively simple: 1. Run the command pecl install DS2. Add EXTENSION=DS.SO3 to PHP.ini. Restart PHP or reload configuration Collection Interface : Contains

$_env in PHP is an array that contains server-side environment variables. It is a super global variable in PHP, and we can access it directly from anywhere in the PHP program. $_env just passively accept the server-side environment variables and

The PHP compact function is used to create an array, the function creates an array that is special, the compact function parameter takes one or more variables, then the name of the variable as the index of the created array, the value of the

A regular expression is a syntax rule that describes the result of a string and is a specific formatting pattern that matches, replaces, and intercepts matching strings. Commonly used languages have regular expressions, such as JavaScript, Java, and

Structure of the ID card number Identity card number is a feature combination code, consisting of 17-bit digital body code and a check code. Order from left to right according to this: six-digit address code, eight-digit birth date code, three-bit

The substr () function returns a portion of a string. Returns the extracted part of the string, FALSE if it fails, or an empty string. Note: If the start parameter is negative and length is less than or equal to start, length is 0. The SUBSTR

This article mainly introduces PHP to get a specified number of random string methods, involving PHP for array traversal and string operations related operation skills, the need for friends can refer to the following This example describes how PHP

MySQL has a date function now (), this value returns not a timestamp, but similar to 2010-10-1 12:12:12, PHP has the date function of date (), Date ("Y-m-d", Time ()) to return the current times, if you use the simple (), The current time is