Solution to PHP Fatal error: Call to undefined function curl_close()

PHP is a widely used programming language with a wide range of applications. When developing web applications using PHP, you often encounter some problems and errors. One of the common errors is "PHP Fatal error: Call to undefined function curl_close()". The occurrence of this error usually affects the normal operation of the program, so it needs to be resolved in time.

1. Understanding the cause of the error

In PHP, curl is a very useful library that can be used to send requests to remote servers and receive responses. When using the curl library, you need to open the curl extension in PHP first so that you can use the functions provided by the curl library. If the curl extension is not turned on, or the web server is not restarted after turning on the extension, the error "PHP Fatal error: Call to undefined function curl_close()" will appear.

2. Check the PHP.ini file

Opening the curl extension in PHP requires configuring the PHP.ini file. First you need to find the PHP.ini file and open it. Find ";extension=php_curl.dll" in the file, delete the semicolon, save and close the file. Then you need to restart the web server for the changes to take effect.

3. Check whether the curl library is installed

If the above method does not work, you need to check whether the curl library has been installed on the web server. If it has been installed, you need to find the path to the curl library and add the path to the extension configuration item in the php.ini file. If it is not installed, you need to install the curl library first and then restart the web server.

4. Check the PHP version

If the PHP version currently used is too low, the curl library may not work properly. Therefore, you need to check the PHP version to ensure that the PHP version used is greater than 5.5.

5. Check the operating system

If the operating system you are using is Windows, you need to ensure that the curl.dll file is placed in the correct directory and the file path is added to the environment in variables. If you are using Linux, you need to use a package manager to install the curl library.

Summary

The above are five ways to solve "PHP Fatal error: Call to undefined function curl_close()". It is important to note that different web servers and operating systems may vary, so the workaround may also vary. If the above method does not work, you can check the PHP error log to find more detailed error information. When encountering these errors, you need to be patient to find the problem and take the correct solution.

The above is the detailed content of Solution to PHP Fatal error: Call to undefined function curl_close(). For more information, please follow other related articles on the PHP Chinese website!