What are some common methods for checking the availability of specific libraries or extensions in PHP installations?

When working with PHP, it is essential to check the availability of specific libraries or extensions in the PHP installation to ensure that your code will run smoothly without any errors. One common method to check the availability of a library or extension is to use the `extension_loaded()` function in PHP. This function allows you to check if a specific extension is loaded and available for use in your PHP environment. 

// Check if the cURL extension is loaded
if (extension_loaded('curl')) {
    echo 'cURL extension is available';
} else {
    echo 'cURL extension is not available';
}

Keywords

PHP libraries extensions availability installations

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