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Php high-performance writing. I 've been switching from. NET to PHP4 for years and recently started to pursue high performance ~~ So I thought it was time to write a blog ~ Come to discover things first ~ Copy the code as follows: $ arrarray (at has

This article mainly introduces how to determine whether an is_file or file_exists exists in PHP? This article uses a test program to demonstrate which function is better. For more information, see Determine whether an object exists using is_file or

Use the built-in Math function of PHP with caution. The article details some of the usage procedures of PHP's built-in Math functions. I hope some methods will be helpful to you. As shown in the following figure... I do not know how to perform large-

This article provides six methods for renaming uploaded images in php and compares the six methods. there must be one suitable method for you to use. I. applicable scenarios:You cannot use the auto-increment number returned from the database to

Describes how to use mysql Performance query. Everything comes from an experiment. See the following example: Table: Copy the code: CREATETABLEIFNOTEXISTS 'foo' ('A' int (10) unsignedNOTNULLAUTO_INCREMENT, 'B' int (10) u everything comes from an

This article mainly introduces the internal multithreading of PHP multithreading. The example analyzes the usage skills of php multithreading and has some reference value, for more information, see the next article. This article mainly introduces

Php array intersection judgment and optimization program code. Yesterday, I had a function to determine the intersection of multiple generated arrays, that is, to determine whether there is an intersection in these arrays, next I will introduce to

Because there are several projects that are waiting to be done, and they are not very urgent, and the frameworks that have been developed are more or less difficult to use, I decided to write a framework first and then do the project again. Since

Six examples of php Image rename Upload methods. I. applicable scenarios: the auto-increment numbers returned from the database cannot be used to rename the uploaded image. This is determined by the process of uploading images or files. General

PHPprint class function summary, allowing you to thoroughly understand the specific usage and scope of use of the print function. PHP print function summary, allowing you to thoroughly understand the specific usage and scope of use of the print

PHP single-threaded web page capture in parallel This PHP tutorial simulates the process of capturing multiple page information in parallel. The key lies in the parallel processing of a single thread. Generally, programs that capture multiple page

The performance bottleneck of most websites is not on the PHP server, because it can be easily handled by adding servers or CPU cores horizontally (for various cloud hosts, it is more convenient to increase the number of VPS or CPU cores. You can

When the webpage returns status code, we usually check whether the website status code is 200 or whether the error page is 404 code, in most cases, you can use the webmaster tool or ff browser to view the status code. Very few people think of

First, unified glossary: What is the object method? What is the class method? The following code example shows that the 01classFoo02 {03publicfunctiona_object_method () 04 {05... 06} 0708publicstaticfunctiona_class_method () 09 {10 .. 11} 12} object

Suppose we are running a mobile phone-related website. You can specify several parameters (such as operating system, screen resolution, camera pixel, and so on) to filter your desired mobile phone. Suppose we are running a mobile phone-related

This article mainly introduces how to determine whether an is_file or file_exists exists in PHP? This article uses a test program to demonstrate which function is better. For more information, see This article mainly introduces how to determine

{Code ...} Check_login (); $ m_time = $ this-> getMillisecond (); $ con ['si _ time'] = array ('gt ', date ('Y-m-d'); $ ranking = M ('sign')-> where ($ con)-> count (); if ($ ranking) {$ haha = intval ($ ranking); switch ($ haha) {case 1: $ pm = 5

However, because mobile phones have many parameters and their parameters vary greatly, the parameter table structure is generally a vertical table (one parameter is a row ), instead of a horizontal table (a parameter is a column), several parameters

This article mainly introduces the built-in Math Function efficiency test in PHP, and tests the execution time of related PHP built-in mathematical functions in the form of examples to analyze the running efficiency. For more information, see This

I. Application scenarios: the auto-increment numbers returned from the database cannot be used to rename the uploaded image. This is determined by the process of uploading images or files.Generally, the Image Upload process is to upload the image to