PHP Tutorials

Define and use the PHP extract () function to import variables from the array into the current symbol table. For each element in the array, the key name is used for the variable name, and the key value is used for the variable value. The second

Foreword LZ77 algorithm is lossless compression algorithm, by the Israeli Abraham Lempel published in 1977. LZ77 is a typical dictionary-based compression algorithm, and many compression techniques are now based on LZ77. In view of its position in

The reverse of the PHP array in an article, "How to sort php arrays," we introduced the sort, asort, and Ksort, which are sorted in ascending order of the array, so if you want to implement the reverse of the arrays? Here's another set of functions

The square root of the square root (sqrt) algorithm in Java (sqrt, square root) is a common mathematical formula in mathematics; The use of the program to find the square root is divided into two main steps: The first step: while () loop, control

Current number of APIs 49 common calculations (one) min-find the minimum max-find the maximum abs-absolute value round-rounding the floating-point numbers ceil-returns the smallest integer greater than or equal to the specified expression, and the

When you create a folder using MkDir, you find that the function has two parameters, and the second parameter specifies permissions for the newly created folder. However, if you use mkdir directly (' File address ', 0777), you find that the

The following summarizes several character functions in PHP, Summary: 1) Ucfirst the first letter into uppercase, such as $string = "This is my web development blog"; echo Ucfirst ($string); Output:this is my web Development blog 2) Lcfirst, the

PHP cryptographic function-sha1 () function encryption first, let's introduce what is SHA1? SHA is the full name: Secure Hash Algorithm (secure hashing algorithm) is mainly applied to digital signature (digital Signature standard DSS) in the

How to learn PHP Array_fill () define and use the Array_fill () function to populate an array with the given values, the returned array has number elements, and the values are value. The returned array uses a numeric index, starting from the start

Define define is used to define a constant, which is also global in scope. You can access it anywhere in the script without the scope of the control. Once a constant is defined, it can no longer be changed or undefined. There are a lot of

PHP cache technology is very common and important in the development process, caching technology can reduce server load, reduce network congestion, enhance the WWW scalability, the basic idea is to take advantage of customer access time locality,

Stat (), Lstat (), file_exists (), is_writable (), is_readable (), is_executable (), Is_file (), Is_dir (), Is_link (), Filectime (), Fileatime (), Filemtime (), Fileinode (), filegroup (), Fileowner (), filesize (), filetype (), fileperms ()

This article mainly introduces the weaving dream dedecms to obtain the current column path and column name method, the need for friends can refer to the next Dedecms template Download Address: www.php.cn/xiazai/code/dedecms The label is as

Learn about time zones The total time zone of the whole Earth is divided into 24 time zones, which are the time zone (zero zone), the East 1-12 Zone, and the West 1-12 zone. Each time zone has its own local time, and, at the same time, the local

A detailed introduction to the PHP array_change_key_case () function 1. A brief introduction to the PHP array array_change_key_case () function and the Array_chunk () function _php Example: The following small series will bring you a brief talk

http://www.php.cn/code/10550.html "target=" _blank "> client uses the Server API interface, the need to construct an HTTP request header, in general, the initialization of a nsmutableurlrequest, Then set the request method, the request body, the

intercept, divide, and replace partial arrays of PHP arrays In this article we will describe the interception of arrays (Array_slice), the Array_chunk and substitution (Array_splice), and the difference between Array_slice and Array_splice! In the

Send post back data in the browser normal use of PHP curl returned is garbled Header filled correctlySuch a garbled:Is the return data encrypted? I figure it out, the data returned is gzip compressed, curl to decompress to normal. Thank you for

Speaking of PHP, the function is often the main, is also PHP enthusiasts, and like PHP advanced friends must control the east, learning PHP Huubang also know that the array is also necessary to grasp, can that way, advanced PHP, Also is to learn the

Connect () Php-cgi.sock failed (2:no such file or directory) problem resolution In the LMNP server architecture, when you configure the nginx,php service, the following error occurs when you access the 127.0.0.1/index.php home page: 2339 Connect ()