What to do if php cannot be installed on iis

With the development of the Internet, websites have become one of the important ways for people to obtain information, and IIS (Internet Information Services), as Microsoft's Web server, has also received more and more attention. For users who like to use IIS, installing PHP is a very necessary and common requirement. However, during the actual installation process, you may encounter some installation problems. This article will explain in detail and provide solutions for the situation where PHP cannot be installed on IIS.

1. Preparation before installation

To install PHP on IIS, you need to prepare the following software and tools:

1. Internet Information Services (IIS): Make sure it has been installed and Enable;
2. PHP decompressed version: Download the decompressed version of PHP from the official website. It is recommended to download the non-thread-safe version;
3. Visual C Redistributable for Visual Studio: Download and install according to the version you need;
4. Notepad: Text editor for editing configuration files.

Download address for the above software and tools:

1. Internet Information Services (IIS): Official website download: https://www.iis.net/downloads
2. PHP decompressed version: Official website download: https://windows.php.net/download
3. Visual C Redistributable for Visual Studio: Microsoft official download: https://aka.ms/vs/16/ release/VC_redist.x64.exe
4. Notepad: Official website download: https://notepad-plus-plus.org/downloads/

2. Install PHP

1. Unzip PHP: Unzip the downloaded PHP to any directory, such as the "php" folder in the root directory of drive D;
2. Configure IIS: Create a new website or virtual website on IIS Host, select the target directory, add a test.php file, the code is as follows:

<?php
phpinfo();
?>

3. Install Visual C Redistributable for Visual Studio: Follow the instructions of the downloaded installation package to install;
4. Configure PHP: Modify the PHP configuration file php.ini, which is usually located in the "D:\php" folder:

i. Open the php.ini file and find the following Configuration:

;extension_dir = "./"

ii. Comment it out, and then add the following configuration:

extension_dir = "D:\php\ext"

iii. Continue to find the following configuration:

;extension=php_openssl.dll

iv. Modify it to The following configuration:

extension=php_openssl.dll

v. Continue to find the following configuration:

;extension=php_mysqli.dll

vi. Modify it to the following configuration:

extension=php_mysqli.dll

5. Configure environment variables: PHP The directory is added to the Windows system environment variable PATH.

3. Solution to PHP failure to install

• Insufficient memory: If your server has small memory and is running other applications that occupy high memory, it may This will cause insufficient memory, causing PHP installation to fail. At this point, increasing server memory or stopping other applications may resolve the issue.
• IIS version problem: If your IIS version is lower than 7.0, PHP installation will fail. At this time, you need to upgrade the IIS version.
• PHP version issue: If your PHP version is not compatible with IIS, you need to download a PHP version that is compatible with IIS.
• Folder permissions issues: If the installer cannot access or modify a PHP folder or file, you may need to set the permissions on the folder or file. Make sure you have sufficient permissions to access and modify these files during installation.
• php.ini setting problem: When modifying the php.ini file, if the settings are incorrect, PHP will not run properly. At this point, you can try to restore the php.ini file to the default settings and then modify it again.

In short, if you follow the above steps and still cannot solve the problem of PHP being unable to be installed, you can seek professional technical support. I hope this article can be helpful to you, and I hope you can successfully install PHP on IIS!

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