PHP

How to achieve the following requirements: $data = Array (' x ' => ' xx ', ' y ' => ' yy ');echo $data [' x '];//output xxecho $data->x;//output XX Method One: Constructs a class, realizes the Arrayaccess interface and the __get,__set magic method

recursive algorithm: is an algorithm that calls itself directly or indirectly. The implementation procedure: completes recursively by writing code directly or indirectly to itself in a function or a subroutine, through a function or a child

2, using namespaces to solve what problem? . Resolve name conflicts, such as defining a class, which is exactly the same as the class in PHP or a class library included in. . To improve code readability, namespaces have an alias feature that helps

Here's an example: rounding to keep the two digits after the decimal point The code is as follows Copy Code $num 1 = 21;Echo sprintf ("%0.2f", $num 1). " "; Output 21.00$num 2 = 16.3287;Echo sprintf ("%0.2f", $num 2). "

Cases The code is as follows Copy Code $test = 0;if ($test = = ") {Echo ' in php, 0 is empty '; is output}if ($test = = = ") {Echo ' in php, 0 is empty '; Not to be output}if ($test ==null) {Echo ' in php, 0 is empty '

It took us a while to build a high-performance socket service that can handle a large number of connections at the same time, but without specific business. If we enable a single process server, but the inside of a business takes 1 seconds, then in

This article is the main part of the PHP class on the $this,static,final,const,self of these key words to use the method. $this $this represents the current instance, using the form of $this->value= ' phpernote ' when the internal method of the

The code is as follows Copy Code Include_once ("class/rss.class.php");//Introduction of RSS PHP class$RSS = new RSS ("Name", "Address", "description", "RSS channel icon");$RSS->additem ("title of the Log", "Address of the log",

The code is as follows Copy Code function Mysubstr ($STR, $length) {$tagcnt = 0;$charcnt = 0;$tag = ';$maxlen = strlen ($STR);$resultstr = ';$tagstack = Array (); for ($i = 0; $i if ($str [$i] = = ' $resultstr. = $str [$i]; for ($j

The easiest way to filter links is to use the Strip_tags function of the PHP tutorial, as follows PHP Filter HTML function: Strip_tags (string) so that you can filter out all the HTML tags.If you want to filter out all HTML tags except the , you

This is a guide that you will not have an independent effect or document for the end of this month, but you will-hopefully-have an understanding of the U N IX timestamp and give you a powerful form of managing your P H p application.Attention:This

/////////////////////////////////////////////////////////////////////////////Mini Alumni (Http://www.piscdong.com/?m=mini_class)//(c) Piscdong Studio (http://www.piscdong.com/)//The program is completely free, please keep this code.Do not sell this

/** explorer! function library* Date of preparation: 2008-06-29* Last update: 2008-07-18 2:08**/Class system{//System sectionfunction Usr_level ($name) {$SQL = new MySQL ();$SQL->query ("Select ' Level ' WHERE ' username ' = ' $name

Php Tutorial: How to Destroy unset with variableUnset -- release the specified variableDescriptionVoid unset (mixed var [, mixed var [,...])Unset () destroys the specified variable. Note that in PHP 3, unset () will return TRUE (actually an integer

Static variables only exist in the function scope. That is to say, static variables only exist in the stack. Generally, variables in a function are released after the function ends, such as local variables, but static variables do not. That is to

A large number of similar prompts will appear on the website, but they can be displayed and run normally.A simple line of code like the following will produce the above error:$ Str = coderbolg;Although this can be run sometimes, problems may occur

Before we use the zlip function, we need to perform the following operations, otherwise we will not be able to read it down.First set in PHP. ini The code is as follows:Copy code Zlib. output_compression = OnZlib. output_compression_level = 6

The apache rewrite rule has two common tags: [L] and [QSA]. After obtaining pseudo-static data with $ _ GET? The following parameter values must be marked with [QSA.The differences between [L] and [QSA] are as follows:1) 'Last | L' (last rule last)

PEAR introduction: Use PEAR to write your next php program      Content: What is PEAR?Why PEAR?What benefits does PEAR bring to me?PEAR Encoding RulesStart using PEARSummaryRelated ResourcesAuthor profile Panfan (Night Sailer)

This is a new handwritten Upload File. After some problems are solved, the file can be uploaded completely and any type is supported.         If (is_uploaded_file ($ _ FILES ['spic '] ['tmp _ name']) {Echo " ";Print_r ($ _ FILES