Page 53-PHP7 Programming Tutorials: Learn PHP7 Online-php.cn

Article Tags

PHP7

Home

Technical articles

Backend Development

PHP7

New features in PHP7.2 (parameter type declaration)

PHP 7.2 has been officially released with new features, functionality, and improvements that allow us to write better code. In this article, I'll introduce some of the most interesting language features in PHP 7.2 - parameter type declarations.

Nov 11, 2019 pm 01:51 PM

PHP7.2

The meaning of php7 type constraints

Before php7, functions and class methods did not need to declare variable types, and any data could be passed and returned. As a result, almost most calling operations had to determine whether the returned data type was qualified. In order to solve this problem, php7 introduced types. statement.

Nov 09, 2019 am 09:19 AM

php7

How to install PHP 7.4 in CentOS 8/RHEL 8 system

This article describes how to install PHP 7.4 in the CentOS 8/RHEL 8 operating system. PHP version 7.4.0RC1 has been released to developers and interested users for testing. Please note that PHP 7.4.0RC1 is not suitable for major deployments, and the expected official release date for GA is November 28, 2019.

Nov 01, 2019 pm 01:12 PM

centos8安装php7.4

PHP7 does not support curl vc15 version solution!

The ultimate solution: 1. Remove the semicolon before extension=curl; 2. Place libssh2.dll in the php directory into the bin directory of the apache installation directory. 3. Restart apache ok, perfect solution.

Nov 01, 2019 pm 01:06 PM

php7curlvc15

ubuntu 16.04 + apache2 switch php7.1 to php7.3

Background: When updating Ubuntu, you choose to keep the current PHP version, which results in multiple PHP versions appearing, and phpinfo displays php7.1. After checking with php -i, I found that many extensions cannot be opened.

Nov 01, 2019 pm 12:01 PM

ubuntuapache2切换php

PHP7 windows adds custom extensions and compiles PHP source code

Determine the version that needs to be compiled, check PHPINFO, and determine the PHP version, VC version and PHP bit number. Download the corresponding Visual Studio or compiler according to the PHP VC version. The blogger's version in the picture below is VC15 and you need to download the Visual Studio 2017 version.

Nov 01, 2019 am 11:57 AM

php7自定义扩展编译源码

php7 cannot connect to mysql

The reason why php7 cannot connect to mysql is: php7 abandoned the mysql_connect() function. Solution: 1. Add the php.ini file; 2. Remove the comment of the option extension; 3. Use PDO or mysqli to connect.

Oct 21, 2019 pm 04:36 PM

php7连接mysql

php5 upgrade php7 fails to connect to mysql database

The solution to the failure of php5 to connect to mysql database when php7 is upgraded is: Since the mysql_connect() function used by php5 to connect to mysql has been abandoned in php7, the function mysqli_connect() needs to be used in php7 to connect to the mysql database.

Oct 18, 2019 pm 03:32 PM

php5php7mysql失败升级

What is the difference between php7 garbage collection and php5

The difference between the garbage collection mechanisms of php7 and php5 is: the garbage collection mechanisms of PHP5 and PHP7 both belong to reference counting. However, in the algorithm processing of complex data types, the memory required by zval in PHP7 is no longer allocated separately from the heap. Store the reference count yourself.

Oct 18, 2019 pm 03:17 PM

php7php5垃圾回收区别

How to install php7

The installation method of php7 is: 1. Download the php7 decompressed file and rename the decompressed file to PHP7; 2. Copy php.ini-development and rename it to PHP.ini; 3. Modify the apache configuration file httpd.conf.

Oct 18, 2019 pm 02:46 PM

php7安装

Why does php7 performance improve?

The reasons for the performance improvement of php7 are: 1. The structure for storing variables becomes smaller; 2. The change of the string structure; 3. The change of the array structure; 4. The function calling mechanism is improved and the execution efficiency is improved.

Oct 18, 2019 pm 02:32 PM

php7性能提升

Interview on the difference between php7 and php5

The difference between php7 and php5 is: 1. The performance of php7 is twice that of php5; 2. Many fatal errors in php5 have been changed into exceptions in php7; 3. Compared with php5, php7 has removed some old SAPIs that are no longer supported. .

Oct 18, 2019 pm 02:24 PM

php5php7区别

Differences between php versions

The difference between various versions of PHP is: PHP5.3 adds a lot of new features, and also adds magic methods __invoke() and __callStatic(); zval in PHP7 uses stack memory, saving memory allocation.

Oct 18, 2019 am 10:46 AM

php版本区别

Reasons for performance improvement of php7

The reasons for the performance improvement of PHP7 are: 1. The structure for storing variables becomes smaller; 2. The change of the string structure; 3. The change of the array structure; 4. The function calling mechanism is improved and the execution efficiency is improved.

Oct 12, 2019 pm 05:58 PM

PHP7性能提升原因