How can one troubleshoot and resolve the "Call to undefined function" error related to PHP extensions in PHP?

To troubleshoot and resolve the "Call to undefined function" error related to PHP extensions, you should check if the required PHP extension is installed and enabled in your PHP configuration file (php.ini). If the extension is missing or disabled, you need to enable it by uncommenting the extension line in the php.ini file and then restart your web server. 

// Check if the required PHP extension is enabled
if (!extension_loaded('extension_name')) {
    // Enable the extension in php.ini
    // extension=extension_name.so
    // Restart your web server
}

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PHP extensions undefined function troubleshooting resolve

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