Software: Apache. PHP/5.5.15 

uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 

SYSTEM 

Safe-mode: OFF (not secure)

E:\xampp\xampp\phpMyAdmin\   drwxrwxrwx
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Viewing file:     tbl_relation.php (22.92 KB)      -rw-rw-rw-

 'CASCADE',
    'SET_NULL'  => 'SET NULL',
    'NO_ACTION' => 'NO ACTION',
    'RESTRICT'  => 'RESTRICT',
);

/**
 * Generate dropdown choices
 *
 * @param   string   Message to display
 * @param   string   Name of the  field
 * @param   array    Choices for dropdown
 * @return  string   The existing value (for selected)
 *
 * @access  public
 */
function PMA_generate_dropdown($dropdown_question, $select_name, $choices, $selected_value)
{
    echo htmlspecialchars($dropdown_question) . '  ';

    echo '' . "\n";
    echo '' . "\n";

    foreach ($choices as $one_value => $one_label) {
        echo '' . htmlspecialchars($one_label) . '' . "\n";
    }
    echo '' . "\n";
}

/**
 * Split a string on backquote pairs 
 *
 * @param   string  original string 
 * @return  array   containing the elements (and their surrounding backquotes)
 *
 * @access  public
 */
function PMA_backquote_split($text)
{
    $elements = array();
    $final_pos = strlen($text) - 1;
    $pos = 0;
    while ($pos <= $final_pos) {
        $first_backquote = strpos($text, '`', $pos);
        $second_backquote = strpos($text, '`', $first_backquote + 1);
        // after the second one, there might be another one which means
        // this is an escaped backquote
        if ($second_backquote < $final_pos && '`' == $text[$second_backquote + 1]) {
            $second_backquote = strpos($text, '`', $second_backquote + 2);
        }
        if (false === $first_backquote 
bool(false)