PHP implementation file download code sharing _php Tips

Simple file downloads require only the use of the HTML connection tag , and the URL value of the attribute href is specified as the downloaded file. As shown: download file If the above code to implement file downloads, only some of the browser

PHP implementation of common sorting algorithm summary _php skills

This paper summarizes the common PHP sorting algorithm, which has good reference value in the design of the algorithm. We are now sharing them for your reference. Specifically as follows: First, insert sort A simple description of text, such as

Parse the difference between PHP functions method_exists () and is_callable () _php Skills

What is the difference between PHP function method_exists () and is_callable ()? In the design process of PHP object-oriented object, we often need to call a certain method to belong to a certain class when the judgment, commonly used methods have

Use PHP to get the current URL path function and server variable _php tips

PHP Gets the function and server variables for the current URL path: Code: Copy Code code as follows: $path =/usr/opt/. /ECT/ABCD; echo $_server[' Document_root ']. "   "; Get the server document root variable (depending on the

PHP Mail Send class Phpmailer Usage example detailed _php skill

The example of this article describes the Phpmailer usage of the PHP mail sending class, and details its detailed operation steps. Share to everyone for your reference. The specific steps are as follows: 1. Install SendMail on the server

About PHP Language Builder introduction _php tips

PHP has several special keywords, such as echo, print, die, require, and so on, although they work like functions, they are actually more like if, while such as control statements, rather than a function. In other words, when the interpreter

A way to figure out the path to the PHP configuration file php.ini _php tips

Recently, there are Buboyu asked php.ini which directory? or modify the php.ini after why not effective? Based on the above two questions, I think it is necessary to teach the friends who have just contacted PHP how to find the path directory of PHP

Simple analysis of PHP's ASCII code conversion class _php skill

ord

Copy Code code as follows: Class ASCII { function decode ($STR) { Preg_match_all ("/(d{2,5})/", $str, $a); $a = $a [0]; foreach ($a as $dec) { if ($dec { $utf. = Chr ($DEC); } else if ($dec { $utf. = Chr (($dec-($dec% 64))/64);

The difference of 4 acceleration and cache extensions in PHP and the choice of suggestions _php tips

Toss a friend of the VPS, the installation of a good lnmp and other Web running environment will choose some cache expansion installation to improve the speed of PHP, often introduced by the eaccelerator, memcached, XCache, alternative PHP Cache

PHP based on array implementation of pagination function Example _php skill

Paging function is a very common function of PHP programming, unlike in the past, today This article describes PHP is based on the array implementation of the paging function. About the paging function of an array, the advantage of using an array

PHP Regular Replacement function preg_replace and Preg_replace_callback use summary _php tips

When writing the PHP template Engine tool class, a previously used regular substitution function of preg_replace (), plus the regular modifier/e, can perform powerful callback functions that implement template engine compilation (in fact, string

How to use $_files in PHP and note _php tips

$_files: Variable submitted to script via HTTP POST file, similar to old array $http_post_files array (still valid but opposed to use) details can be found in the Post method upload The $_files array reads as follows: $_files[the original name of

A strict PHP session timeout time setting method _php Tips

Recently, a PHP project used to limit the logon time function, such as the user login system after 60 Minutes if there is no operation to automatically exit, I searched the network has collected the following methods available for reference. The

PHP returns an array of data from the database with the specified field _php tips

In many cases, we've been using skilled code from touching a new project to development and then looking back over the code we wrote. Therefore, in the completion of each new project, appropriate to do some project summary, code summary, perhaps you

PHP to obtain the MAC address of the NIC support Win/linux system _php Skills

Copy Code code as follows: /** Obtain the MAC address origin of the NIC; currently supports Win/linux system Get the physical (MAC) address of the machine's network card **/ Class getmacaddr{ var $return _array = Array (); Returns an

PHP Timing Planning task and fsockopen continuous process instance _php skills

The Web server executes a PHP script that can sometimes take a long time to return execution results, and the subsequent script will have to wait long to continue.You can do this by using the Fscokopen function if you want to implement a simple

Learn more about Stdclass class _php skills from the source code of PHP

In Baidu Encyclopedia, the definition of Stdclass is as follows: Copy Code code as follows: Stdclass began to be popular in PHP5. And Stdclass is also a reserved class of Zend. Stdclass is a base class for PHP, Almost all classes

PHP header () functions commonly used methods to summarize _php tips

Define Encoding Copy Code code as follows: Header (' Content-type:text/html;charset=utf-8 '); Atom Copy Code code as follows: Header (' Content-type:application/atom+xml '); Css Copy Code code as follows:

The difference between curl and file_get_content in PHP _php skills

Until recently, to do a web thief program to find that File_get_content has been completely unable to meet the demand. I think, in reading remote content, file_get_content in addition to use than curl convenient, other than curl good. Main

53 Details of PHP code optimization _php Tips

It is quicker to use single quotes instead of double quotes to contain strings. Because PHP searches for variables in a string enclosed in double quotes, single quotes are not, note: only echo can do this, it is a "function" that can take multiple

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