Research of deep cache (Z-cache)Recently stuck in the shadow map process. Because I want to run the shadow map on the OpenGL ES 2.0 compatible platform, and to run shadow map smoothly, the usual situation is to have gl_oes_depth_texture extension, and some compatible machines are not this extension, This has brought some difficulty to our developers. However, there is still some way, the premise is to the computer graphics Z-buffer to have a deep understanding of the line.Saiyang original articl
This article mainly introduced in-depth understanding of the PHP principle of the implementation cycle, a brief analysis of the PHP program from the editing to lexical analysis, grammar analysis and interpretation of the implementation of the relevant principles of the stage, the need for friends can refer to the following
The execution cycle of PHP, from the first PHP script we wrote to the last script is executed, the results are executed, this process can be divided into the following stages
In-depth understanding of PHP principles of execution cycle analysis, in-depth understanding of PHP
This article describes the PHP principle of the execution cycle. Share to everyone for your reference, as follows:
The execution cycle of PHP, from the first PHP script we wrote to the last script is executed, the results are executed, this process can be divided into the following stages:
First of all, Zend Engine (ZE), call the lexical analyzer (Lex
executed through Zend engine (ZE, Zend Engine), ZE is written in C, and everyone knows that C is a strongly typed language, that is, all variables in C are declared to final destruction, only one type of data can be saved. So how does PHP implement the weak type on the basis of ze?First of all, if you have not contacted the source code analysis of PHP before, ex
directory along with subdirectories to D:\\temp\\out.zip.
* @throws Exception
*/
public void Testcreatezip () throws exception{
//Compress all files under Basedir, including subdirectories
String basedir= "D:\\temp\\zipout";
List filelist=getsubfiles (New File (BaseDir));
//Compressed filename
zipoutputstream zos=new Zipoutputstream (New FileOutputStream ("D:\\temp\\out.zip"));
ZipEntry Ze=null;
byte[] Buf=new byte[1024];
int rea
Include my own version for your reference.We use the this one to zip up photos to download so it works with various unzip programs. It preserves the directory structure and timestamps. Public Static voidCreatezipfile (File srcdir, outputstream out,BooleanVerbosethrowsIOException {Listlistdirectory (Srcdir); Zipoutputstream Zout=NewZipoutputstream (out); Zout.setlevel (9); Zout.setcomment ("Zipper v1.2"); for(String filename:filelist) {File file=NewFile (Srcdir.getparent (), fileName); if(verbos
specify the name of its zipentry constructor as "Dir/t.txt". If you are packing directly into a level-one directory in a zip file, you just need to specify name "T.txt".
Here's a piece of code to compress a file into a zip:
Ze = new ZipEntry (subpath);
Zos.putnextentry (ze);
bis = new Bufferedinputstream (new FileInputStream (f));
while (Bis.read (data, 0, ByteLength)!=-1) {
zos.write (data);
}
Bis.clos
Maybe you know, maybe you don't know, PHP is a weakly typed, dynamic scripting language. The so-called weak type, that is, PHP does not strictly verify the variable type (strictly speaking, PHP is a medium-strong type language, this part will be described in future articles), when declaring a variable, do not need to show the type of data it holds:
Copy Code code as follows:
$var = 1; Int
$var = "Laruence"; String
$var = 1.0002; Float
$var = Array (); Array
$var = new Exce
In PHP, functions are divided into two types,
One is zend_internal_function, a function that is provided by the extension or zend/php kernel, written in ' C/s + + ', and can be executed directly.
The other is zend_user_function, which is what we often see, the function that the user defines in the PHP script, which will eventually be translated into the opcode array by ze to execute
Looking at zend_compile.h, we can find the followin
parser:
The code is as follows:
/Usr/bin/php-f example. ph
As I have mentioned in the previous article, PHP is executed through Zend engine (ZE, Zend engine), and ZE is written in C. everyone knows that C is a strongly typed language, that is, all variables in C can only save one type of data when declared to the final destruction. So how does PHP implement weak types based on
Implement the separation of PHP compilation and execution (separatingcompilationandexecution), read and implement the separation of PHP compilation and execution (separatingcompilationandexecution), just chatting with you in the PHP Group, I assume that everyone wants to write an article about how to implement PHP source code encryption. this is the opportunity for QA to smoke.
Chatting with everyone in the PHP Group just now, we should assume that everyone wants to write an article on how to im
Implements the separation of PHP compilation and execution (separatingcompilationandexecution. Chatting with everyone in the PHP Group just now, we should assume that everyone wants to write an article on how to implement PHP source code encryption. with this opportunity, QA is in smoke, I want to write some ideas. Me
Chatting with everyone in the PHP Group just now, we should assume that everyone wants to write an article on how to implement PHP source code encryption. with this opportunity, QA
Maybe you know, maybe you don't know, PHP is a weak type, dynamic scripting language. The so-called weak type means that PHP does not strictly verify the variable type (strictly speaking, PHP is a medium-strong language, which will be described in future articles ), when declaring a variable, you do not need to specify the type of data it stores:
$var = 1; //int
$var = "laruence"; //string
$var = 1.0002; //float
$var = array(); // array
$var = new Exception('error'); //object;
Deeply understand the execution cycle analysis of PHP principles, and deeply understand php
This article describes the execution cycle of PHP principles. We will share this with you for your reference. The details are as follows:
The execution cycle of PHP can be divided into the following stages:
First, Zend Engine (ZE) calls the lexical analyzer (generated by Lex, the source file is in Zend/zend_language_sanner.l) and removes spaces and comments fro
Maybe you know, maybe you don't know that PHP is a weak type, dynamic scripting language. The so-called weak type, that is, PHP does not strictly verify the variable type (strictly speaking, PHP is a medium-strong type language, this part will be described in a later article), when declaring a variable, do not need to display the type of data that indicates it to save:
Copy CodeThe code is as follows:
$var = 1; Int
$var = "Laruence"; String
$var = 1.0002; Float
$var = Array (); Array
$var = ne
Research on Deep cache and deep Cache
Research on Deep cache (Z cache)
Recently stuck in the shadow map process. Because I want to run the shadow map on a platform compatible with OpenGL ES 2.0, and to run the shadow map smoothly, the general situation is that there is a GL_OES_depth_texture extension, and some compatible machines do not have this extension, this makes it difficult for our developers. However, there are still some solutions, provided that you have a deep understanding of the Z-B
", the name that humans created for me arrogant, there have been countless battles.
On the other hand, even though she has a rare appearance in human beings, even though she has a very powerful sword, it cannot hurt me. But she is the only one, and she is the only one, but I do not want to hurt, even if the sun, will never come back.
Not long ago, well, there were about three weeks in the saying of humans. I just came to this "fog" place every 30 years, just like my grandparents. Everything was
paper to pick up and pull optional hang zhi-挜 Laos tart Cambridge earn squeeze swing inextricably fishing loss pick-up change according to twist slap throw dust mixed whipped shen range push mix put on the Wang swing off gumbo support kick out gust Somo save enemy convergence several Zhai LAN fight cut no old Shi Yang Tan day dawning show Jin Xiao ye Halo hui temporary heating Operation Park machine kill miscellaneous right bar to Yang Jinjie polar structure fir stable jian stretchers gun maple
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