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Example analysis of the difference between '??' and '?:' introduced in PHP7

The difference between "??" and "?" introduced in PHP7 is: [$a ?? 0] is equivalent to [isset($a) ? $a : 0]; 2. [$a ?: 0] is equivalent to [$a ? $a : 0].

Jun 29, 2020 pm 06:07 PM

php ??

How to make PHP 7 run faster

PHP 7 is much faster than [5. If you reach PHP 7, you will definitely not be able to run LAMP or LEMP. Please prepare the installation of the underlying service first.

Jun 29, 2020 pm 06:01 PM

php7 运行

Learn the detailed tutorial to perfectly install PHP7 on Mac system

Now there are many ways to install Php7. Today I will teach you how to install PHP7 perfectly through the Mac system. It is detailed, serious and has a lot of useful information. I hope it can help everyone and learn and make progress with everyone.

Jun 29, 2020 pm 05:54 PM

mac 安装php

Detailed explanation of PHP7 environment configuration in windows7

At present, PHP has reached 7, but the configuration of version 7 is different from the previous version 5. Today I will record the environment configuration of 7. For the apache configuration, you can download the corresponding version according to your own platform.

Jun 28, 2020 pm 04:33 PM

php7 windows

Let's take a look at the major new features of php7

So far, PHP has officially released the RC5 version of php7. Now the major features of php7 have definitely been finalized and there will be no more changes. The iterations of some subsequent versions are mainly bug fixes, optimizations and the like. Let’s talk about the main changes in php7 that we have been looking forward to.

Jun 28, 2020 pm 04:26 PM

php7 新特性

How to install PHP7 under centos7?

The path of the added library file must be consistent with the system platform arch. For 32-bit systems, just add [/usr/local/lib] directly. For 64-bit systems, you must add [/usr/local/lib64.], otherwise an error will still be reported. This article will Detailed introduction on how to install PHP7 under centos7.

Jun 28, 2020 pm 04:20 PM

centos7 安装php7

How to connect to sql server in PHP7?

The latest version on the official website is 7.1.3, but this version is inconsistent with the Microsoft PHP SQL driver, which makes it impossible to load the [php_sqlsrv_7_ts_x64.dll] file. At first, I thought it was the wrong version between 32 and 64, but it still didn’t work after changing it, so I tried lowering the version. Tried it, and it was successful.

Jun 28, 2020 pm 04:10 PM

php7 sql srver

Analyze the internal implementation of variables in the PHP7 kernel

The basic structure of PHP variable implementation is zval. Various types of implementations are based on this structure. It is the most basic structure in PHP. Each PHP variable corresponds to a zval. Let’s take a look at this structure and the memory management of PHP variables. mechanism.

Jun 28, 2020 pm 03:44 PM

php7 内核变量

Comparison explains the optimization and improvement of PHP7

This article is a comparison between PHP7 and previous versions of PHP. First, let’s talk about the new things brought by PHP7: type declarations, [set_exception_handler()], and new operators "??" "<=>" , anonymous functions, define constant arrays, namespace reference optimization, etc.

Jun 28, 2020 pm 03:35 PM

php7 优化提升

The correct way to install PHP7 on CentOS

The PHP versions on CentOS are very old and cannot meet the PHP version requirements of some frameworks. As a result, many third-party software libraries have emerged, such as EPEL, RPM Fusion, Remi, etc., which provide new versions of PHP. Let our system keep pace with the times.

Jun 24, 2020 pm 05:58 PM

CentOS php7

Watch the performance battle between PHP7 and HHVM

HHVM is an open source PHP virtual machine that uses JIT compilation and other technologies to greatly improve the execution performance of PHP code. It is rumored that the execution performance of the current version of native PHP code can be improved by 5-10 times.

Jun 24, 2020 pm 05:47 PM

PHP7 HHVM

Learn how php7 achieves maximum performance

PHP7 has been released. As the largest version upgrade and performance upgrade of PHP in the past 10 years, PHP7 has shown obvious performance improvements in multiple tests. However, in order to maximize its performance, I still have a few I want to remind you something.

Jun 24, 2020 pm 05:41 PM

php7 性能优化

How to do performance testing for PHP7

After we test the performance of PHP7 with some simple loop programs, will the focus shift to PHP applications? There is such a question, PHP7's performance has indeed exploded, but when our application is really run with PHP7, will the performance also improve so much?

Jun 24, 2020 pm 05:37 PM

php 性能测试

The key to doubling PHP7 performance revealed

For a mature language that has gone through many revisions and countless optimizations in the past 20 years, it is not easy to have a breakthrough that doubles the performance. Rasmus Lerdorf said frankly that unlike ordinary new projects, it is easy to find a lot of room for improvement. The new version of PHP is not This result was achieved by modifying some programs.

Jun 24, 2020 pm 05:31 PM

php7 性能

Learn the innovation and performance optimization of PHP7

PHP has gone through 20 years of history. PHP7 can be said to be a large-scale innovation compared to the previous series of PHP5, especially in terms of performance, which has achieved a significant improvement by leaps and bounds. PHP is a web development language that is widely used around the world. The innovation of PHP7 will certainly bring more profound changes to these web services.

Jun 24, 2020 pm 05:26 PM

PHP7 革新性能优化