Are you getting the dreaded error: “Call to undefined function curl_init()”? If so, don’t worry. This blog post is here to help! We’ll walk you through the steps to fix this error quickly and easily. So grab a cup of coffee and let’s get started!
What reasons causing the Call to undefined function curl_init() error?
The error “Call to undefined function curl_init()” occurs when the cURL library is not installed or enabled in your PHP setup. Some of the common reasons for this error are:
- cURL library is not installed: If cURL is not installed on your system, you will not be able to use the
curl_initfunction. - cURL is not enabled in PHP: If cURL is installed, but not enabled in your PHP setup, you will not be able to use the
curl_initfunction. - Incorrect PHP configuration: If the PHP configuration file (
php.ini) is not set up correctly, the cURL library may not be loaded. - Server misconfiguration: If the server is not configured properly, the cURL library may not be installed or enabled.
- Incorrect version of PHP: If the version of PHP you are using is not compatible with the version of cURL installed on your system, the error “Call to undefined function curl_init()” may occur.
The error “Call to undefined function curl_init()” usually means that the cURL library is not installed or enabled in your PHP setup. To resolve this issue, you can do the following:
Step 1: Check if cURL is installed
Let’s run the following command in your terminal/command prompt: php -m to see a list of installed PHP modules. If you don’t see curl in the list, it means cURL is not installed.
Step 2: Install cURL
If you don’t have cURL installed, you can install it on most systems by using a package manager.
For example, on Ubuntu, run the following command: sudo apt-get install php-curl.
On Windows, you can download the cURL dll from the official website and add it to your php/ext directory.
For Linux users, this can be done by running the command “sudo apt-get install php5-curl” in a terminal window.
Once cURL is installed and enabled, users can use it for transferring data to or from a remote server
Step 3: Enable cURL in PHP
If cURL is installed, but not enabled in your PHP setup, you can add the following line to your php.ini file:
- In Window
extension=php_curl.dll (Windows)
- In Unix or Linux
extension=curl.so
Step 4: Restart your web server
After making changes to your php.ini file, you will need to restart your web server to check if the error is gone.
Final words: Call to undefined function curl_init()
the Call to undefined function curl_init() error is an issue that can be easily fixed by checking if cURL is installed and enabled. If it is not installed, then it can be quickly and easily installed. Once cURL is installed, it can be enabled in the php.ini file by removing the leading semi-colon before the “extension=php_curl.dll” line. With these simple steps, you can quickly fix this error and get back to using your PHP code normally.
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This error will occur if your server does not have PHP’s curl extension installed or enabled.
The error will read something like this.
Uncaught error: Call to undefined function curl_init()
Essentially, PHP can’t find the curl_init function because the extension that defines it has not been loaded. This results in a fatal error, which kills the PHP script.
To avoid this kind of error, you can check to see whether the cURL module has been loaded or not before you attempt to use it.
Check to see if curl is enabled.
To see if your PHP installation has cURL enabled, you can run the following piece of code.
<?php //Call the phpinfo function. phpinfo();
The phpinfo function above will output information about PHP’s configuration.
If a CTRL + F search for “curl” is unable to find anything, then it means that your web server has not loaded the curl extension.
If you do find it, then you should see the following line under the cURL heading:
cURL support: enabled
Note that you should NOT leave this phpinfo function on a live web server, as it outputs sensitive information about your PHP installation!
Enabling curl on Linux.
If your web server is running on Linux and you have SSH / terminal access, then you can install and enable cURL by running the following command.
sudo apt-get install php-curl
After running the command above, you will need to restart your web server so that the changes will take effect.
If you are using Apache, you can restart your web server like so.
sudo /etc/init.d/apache2 restart
If you are using Nginx, you can use the following command.
sudo /etc/init.d/nginx restart
After your web server has been restarted, curl should be available.
Enabling curl on Windows.
If you are using Windows, you will need to locate the php.ini file that is being used by your web server.
If you are unsure about which php.ini file you need to edit, then you can use the phpinfo script that we used above, as that will display the full path to the file that is being used by the web server.
Once you have located your php.ini file, you will need to “uncomment” the following line.
;extension=php_curl.dll
To uncomment the line above and enable the php_curl.dll extension, simply remove the semi-colon at the beginning.
After you have saved the changes that you made to your php.ini file, you will need to restart your web server. Otherwise, the new configuration will not take effect.
Enabling curl on WampServer.
If you are using the popular WampServer program on Windows, then you can try the following steps:
- Click on the WampServer icon in your system tray.
- Hover over the “PHP” option.
- Once the PHP menu appears, hover over the “PHP extensions” option.
- At this stage, a list of PHP extensions should appear. If an extension has a tick beside it, then it is already enabled. If the php_curl option does not have a tick beside it, then it is not enabled. To enable curl, simply click on the php_curl option.
- WampServer should automatically restart Apache and the changes should take effect.
- If WampServer does not automatically restart Apache, then you can manually force it to do so by clicking on the “Restart All Services” option in the main menu.
Hopefully, this guide helped you to get rid of that nasty “undefined function curl_init” error!
Related: Sending a POST request without cURL.
Last Updated :
01 Nov, 2018
Problem: Call to undefined function curl_init()?
Solution: This error occurs when cURL library is not installed on your system or enabled in your PHP installation.
In order to resolve this error, install cURL library.
-
For Linux – Terminal Command :
sudo apt-get install php-curl
- For Windows:
Download cURL library from Official Website
Go to your php.ini file and remove the ; mark from the beginning of the following line:;extension=php_curl.dll
Reference: http://php.net/manual/en/curl.installation.php
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Краткая инструкция для тех, кто хочет настроить curl php на Windows 8.1 x64. Если curl не настроен на вашем вэб-сервере, то возникает следующая ошибка: Fatal error: Call to undefined function curl_init().
Настройка cURL
Написанное ниже актуально для связки Windows 8.1 x64, Windows10 x64 + Apache 2.4.12 (win32) + Open SSl 1.0.1m + PHP 5.6.11 (php-5.6.11-Win32-VC11-x86).
- Скачиваем библиотеку cURL http://winampplugins.co.uk/curl. Распаковываем в любую папку. Например, «W:\WebServers\usr\local\curl».
- В файле настроек PHP php.ini необходимо включить расширение extension=php_curl.dll.
- Пункт не обязательный, но во многих источниках его рекомендуют выполнять. У нас работает без выполнения этого пункта. Из папки где установлен PHP скопировать в папку «C:\Windows\system32» следующие библиотеки: libssh2.dll, php_curl.dll (находится в папке ext), ssleay32.dll, libeay32.dll. Дополнительно файл ssleay32.dll необходимо скопировать в «C:\Windows\SysWOW64».
- Добавить в переменные среды в переменную Path пути до папки установки curl.exe и файла php.ini. Например, «W:\WebServers\usr\local\curl;W:\WebServers\usr\local\php5». Очень порадовало то, что в windows10 (1511) появился новый интерфейс редактирования переменных сред. Стало очень удобно редактировать параметры.
Включение поддержки SSL для cURL
- Скачать файл http://curl.haxx.se/ca/cacert.pem в папку, в которой установлена библиотека curl.exe.
- Переименовать скаченный файл в curl-ca-bundle.crt
- Перезагрузить компьютер.
Проверка работы cURL
Запустите командную строку Windows. Выполните следующую команду:
curl https://www.google.com или curl http://filinkov.ru
Published November 7, 2024
Problem: PHP cURL Function Not Found
The «Call to undefined function curl_init()» error happens in PHP when you try to use cURL functions without the cURL extension installed or enabled. This error stops cURL-related code from running, which is often used for making HTTP requests and transferring data.
Diagnosing the Problem
Checking PHP Configuration
To fix the «Call to undefined function curl_init()» error, check your PHP configuration. Verify your PHP version by running php -v in the command line or using the phpinfo() function in a PHP script. PHP versions may have different requirements for the cURL extension.
Check your php.ini file. This file contains PHP settings, including enabled extensions. Look for a line about the cURL extension, which may be commented out with a semicolon (;).
To check the cURL extension status, search for «curl» in the phpinfo() output. If cURL is not listed in the enabled extensions, you need to enable it.
Tip: Locating php.ini File
To find your php.ini file location, create a PHP script with <?php phpinfo(); ?> and run it in your browser. Look for the «Loaded Configuration File» entry in the output.
Identifying Server Environment
Identify your server environment to choose the right solution. Determine your operating system (Windows, Linux, or macOS) as the installation process is different for each.
Recognize your web server software, such as Apache or Nginx. This information is useful because you need to restart your web server after changing PHP configuration.
Knowing your server environment helps you select the right method for installing or enabling the cURL extension, which is needed to fix the «Call to undefined function curl_init()» error.
Solutions for Resolving the Curl_init() Error
Enabling cURL Extension in PHP
To enable the cURL extension in PHP, find and open your php.ini file. Look for the line about the cURL extension, which may look like ;extension=curl. Remove the semicolon at the start of the line to uncomment it. Save the changes to the php.ini file. After changing the file, restart your web server for the changes to work.
Tip: Locating php.ini
If you’re unsure where your php.ini file is located, you can create a PHP script with the following code and run it to find the path:
<?php
phpinfo();
?>Look for the «Loaded Configuration File» entry in the output.
Installing cURL Extension
Windows Installation
For Windows, download the right cURL extension file for your PHP version from the PHP website. Put the downloaded file (usually named php_curl.dll) in the PHP extensions folder. Update your php.ini file by adding or uncommenting the line extension=php_curl.dll. Restart your web server to apply the changes.
Linux Installation
On Linux systems, use your system’s package manager to install the cURL extension. For Ubuntu or Debian-based systems, open a terminal and run:
sudo apt-get install php-curlFor CentOS or Fedora-based systems, use:
sudo yum install php-curlAfter installation, restart your web server.
macOS Installation
On macOS, you can use package managers like Homebrew or MacPorts to install the PHP cURL package. With Homebrew, run:
brew install php@7.4Replace 7.4 with your PHP version. Then, set up PHP to use the new version.
Verifying cURL Installation
To check the cURL installation, create a PHP script with the phpinfo() function:
<?php
phpinfo();
?>Run this script and look for «curl» in the output. You should see cURL listed in the PHP modules section. If cURL is there, the installation worked.
Example: Testing cURL Functionality
After installation, you can test if cURL is working correctly by creating a simple PHP script:
<?php
if (function_exists('curl_version')) {
echo "cURL is installed and working!";
print_r(curl_version());
} else {
echo "cURL is not installed or not working properly.";
}
?>This script will display cURL version information if it’s installed correctly.