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The underlying working principle of PHP. First, let's take a look at the following process: we have never manually started PHP-related processes, which run with Apache startup. PHP is connected to Apache through the mod_php5.so module (for details, refer to introduction) Let's take a look at the following process: We have never started PHP-related processes manually. it runs with Apache startup; PHP is connected to Apache through the mod_php5.so module (specifically, SAPI, that is, the Server Ap

In-depth explanation of the PHP operating mechanism. Let's take a look at the following PHP running mechanism process: 1. we have never started PHP-related processes manually. it runs with Apache startup. 2. PHP uses mod_php5.so to simulate Let's take a look at the following PHP running mechanism process: 1. we have never started PHP-related processes manually. it runs with Apache startup; 2. PHP is connected to Apache through the mod_php5.so module (specifically, SAPI, that is, the Server Appl

"BIT_MASK _" followed by any number and place the matching position on the number, then, replace the matched numbers with the numbers calculated by the following expression.The following is the meaning of each element in this command: 'S is replaced in the selected area (: help: s)/Zs indicates that the matching starts from this (: help // zs)/D * search for any number (: help // d)/Ze indicates that the match ends here (: help //

Http://www.cnblogs.com/hongfei/archive/2012/06/12/2547119.htmlMore in-depth learning and understanding can be viewed below:Wind and Rain blog http://www.laruence.com/2008/08/12/180.htmlBaidu Research Center's blog http://stblog.baidu-tech.com/?p=763Wang Xingbin's Blog http://blog.csdn.net/wanghao72214/article/details/3916825Brief introductionLet's take a look at the following procedure: We have never manually opened the relevant process of PHP, it is running with Apache boot; PHP is

used to process requests, file streams, error handling, and other related operations; The Zend engine (ZE) is used to convert the source file to the machine language, and then run it on the virtual machine; The extension layer is a set of functions, class libraries, and streams. PHP uses them to perform certain operations. For example, we need mysql extension to connect to the MySQL database; When ZE ex

What is the life cycle of the next PHP single case? For example, I get a singleton in the first request and then assign the variable $ A to it. Does this make it possible to get this $ A variable when a second request is made? About this knowledge, experienced pro, what good blog or book recommended to learn, thank you? Reply content: What is the life cycle of the next PHP single case?For example, I get a singleton in the first request and then assign the variable $ A to it. Does this make

handling and other related operations;5. The Zend Engine (ZE) is used to convert the source file into a machine language and then run it on the virtual machine;6. The extension layer is a set of functions, class libraries, and streams that PHP uses to perform certain operations. For example, we need MySQL extension to connect to MySQL database;7. When Ze executes the program, it may be necessary to connect

Reprinted from the Bird's cousin blog: http://www.laruence.com/2008/08/14/250.html Just in the PHP group and we chat, promised everyone to write an article on how to implement the PHP source code encryption, through this will be the opportunity for QA in the smoke, on this issue, I write some ideas. There are two important functions in the compilation and execution phase of ze: Zend_api Zend_op_array * (*zend_compile_file) (zend_file_handle *file

When it comes to PHP's operating mechanism to introduce PHP modules, PHP has a total of three modules: the kernel, the Zend engine, and the extension layer, the PHP kernel is used to handle requests, file streams, error handling and other related operations, Zend Engine (ZE) to convert the source files into machine language, Then run it on the virtual machine; the extension layer is a set of functions, class libraries, and streams that PHP uses to per

PHP operating mechanism and principle (underlying), PHP operating mechanism When it comes to PHP's operating mechanism to introduce PHP modules, PHP has a total of three modules: the kernel, the Zend engine, and the extension layer, the PHP kernel is used to handle requests, file streams, error handling and other related operations, Zend Engine (ZE) to convert the source files into machine language, Then run it on the virtual machine; the extension l

PHP operating mechanism and principle (underlying), and php operating mechanism. The PHP operating mechanism and principle (underlying). when talking about the php operating mechanism, we should first introduce the php module. php has three modules in total: kernel, Zend Engine, and extension layer; PHP running mechanism and principle (underlying), php running mechanism Speaking of the php operating mechanism, we should also introduce the php module. PHP has three modules in total: Kernel, Zend

Brief introduction Let's take a look at the following procedure: We have never manually opened the relevant process of PHP, it is running with Apache boot; PHP is connected to Apache via the Mod_php5.so module (specifically, SAPI, the server Application programming interface); PHP has a total of three modules: the kernel, the Zend engine, and the expansion layer; The PHP kernel is used to handle requests, file streams, error handling and other related operations; The Zend Engine (

PHP is a weakly typed, dynamic language script. When declaring a variable, it is not necessary to indicate the type of data it holds. For example: $var = 1;$var = "variable";$var = 1.00;$var = Array ();$var = new Object (); $var = 1;$var = "variable";$var = 1.00;$var = Array ();$var = new Object ();Dynamic variables, which can be changed during run time, and do not need to declare variable types before they are used. So, question one, how does the Zend engine use C to implement this wea

PHP is a weak type, dynamic language script. When declaring a variable, you do not need to specify the data type it stores. Example: lt ;? Php $ var1; $ var quot; variable quot; $ var1.00; $ vararray (); $ varnewObject (); lt ;? Php $ var1; $ va... PHP is a weak type, dynamic language script. When declaring a variable, you do not need to specify the data type it stores. For example: $ Var = 1;$ Var = "variable ";$ Var = 1.00;$ Var = array ();$ Var = new Object (); $ Var = 1;$ Var = "varia

Brief introduction Let's take a look at the following procedure: We have never manually opened PHP related process, it is running with Apache boot, PHP through the mod_php5.so module and Apache connected (specifically SAPI, Server application programming interface); PHP has three modules: kernel, Zend engine, and the extension layer; the PHP kernel handles requests, file streams, error handling, and so on; the Zend Engine (ZE) is used to convert the s