What is the difference between get_cfg_var() and ini_get() in PHP configuration settings?

The main difference between get_cfg_var() and ini_get() in PHP configuration settings is that get_cfg_var() retrieves the value of a PHP configuration option set in the php.ini file or through the PHP configuration file, while ini_get() retrieves the value of a specific configuration option set at runtime. Therefore, get_cfg_var() is more suitable for retrieving the default or initial value of a configuration option, while ini_get() is used to get the current value of a configuration option during the script execution. 

// Using get_cfg_var() to retrieve the default value of a PHP configuration option
$memoryLimit = get_cfg_var('memory_limit');
echo "Default memory limit: " . $memoryLimit;

// Using ini_get() to retrieve the current value of a PHP configuration option
$displayErrors = ini_get('display_errors');
echo "Display errors setting: " . $displayErrors;

Keywords

get_cfg_var ini_get PHP configuration settings difference

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