What is the significance of magic_quotes_gpc and magic_quotes_sybase in PHP when dealing with escaping values?

The significance of magic_quotes_gpc and magic_quotes_sybase in PHP is that they automatically escape incoming data from forms, which can lead to double escaping and potential security vulnerabilities. To solve this issue, it is recommended to disable these features and manually escape input data using functions like mysqli_real_escape_string or prepared statements. 

// Disable magic quotes
if (get_magic_quotes_gpc()) {
    function stripslashes_deep($value) {
        $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value);
        return $value;
    }
    
    $_POST = array_map('stripslashes_deep', $_POST);
    $_GET = array_map('stripslashes_deep', $_GET);
    $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
    $_REQUEST = array_map('stripslashes_deep', $_REQUEST);
}

Keywords

magic_quotes_gpc magic_quotes_sybase escaping values PHP significance

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