What should I do if PHP cannot display error messages in IIS environment?

Solution to the problem that PHP cannot display the error message in IIS environment: 1. Change the PHP configuration file [php.ini]; 2. Create a new [web.config] file under the root directory of the website and add Corresponding code; 3. Install the component [VCRUNTIME140.dll].

Solution to PHP failing to display error message in IIS environment:

1.PHP

First open the PHP configuration file php.ini and make the following configuration changes:

• log_errors = On

• html_errors = On

• display_errors = On

• fastcgi.logging = 0

• ##error_reporting = E_ALL & ~E_NOTICE

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• # Extension = PHP_CURL.DLL Open the CURL mode

• # EXTENSION = php_opensl.dll. #extension = php_pdo_mysql.dll Open the database transaction processing

• # EXTENSION_DIR = "C: \ PHP \ EXT"; Set the PHP module path .timezone = PRC/ “Asia/Shanghai” ;Set the time zone to China time zone

•             short_open_tag = On; cgi.Force_redirect = 0; Open the way to run in CGI. Why not change this item for the time being? # error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED ;Modify the error reminder to the standard mode

• 2.Web site

• in Create a new web.config file under the root directory of the website
  Add the following code:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5"/>
    <httpRuntime targetFramework="4.5"/>
  </system.web>
  <system.webServer>
    <httpErrors errorMode="DetailedLocalOnly" existingResponse="PassThrough"></httpErrors>
  </system.webServer>
  
</configuration>

• 3. Run cmd to enter the directory, and when executing PHP, a pop-up window will prompt: Unable to start this program because VCRUNTIME140.dll is missing from your computer.

• Running php7 under Windows requires Visual C Redistributable 2015. The previous version does not need to be that high. The latest version of Apache may also require this component. This component is a C application created by running Visual Studio 2015. The necessary components can be solved by installing them. You can directly go to the Microsoft official website to download the installation program.

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