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[教學]php動態下拉式選單 2階層

房東:小明
發表時間:2010-03-02




Dynamic Dropdown for Country and City List




/*
- Function to return the Country list as an array
- The array can be generated from a database resultset
*/
function getCountryList()
{
// Country List array
$countryList = array (
'1' => 'Bangladesh',
'2' => 'USA',
'3' => 'UK'
);

return $countryList;
}

/*
- Function to return the City list as an array
- Country ID is used to generate the city list
*/
function getCityList($countryId)
{
// City list array
// First key of the array is the Country ID, which holds an array of City list
$cityList = array (
'1' => array ('Dhaka', 'Chittagong', 'What else'),
'3' => array ('London', 'Cannot Remember'),
'2' => array ('Washington', 'N.Y.', 'etc')
);

return $cityList[$countryId];
}
?>



// Retrieving the country list
$countryList = getCountryList();

// Setting the variable if the country is selected for its city list
@$countryId = $_GET['countryId'];

// Retrieving the city list if a country is selected
$cityList = ($countryId) ? getCityList($countryId) : null;

if (!empty($countryList))
{
// Generating the country drop down menu
echo "";
}

if (!empty($cityList))
{
// Generating the city drop down menu if a country is selected
echo "";
}

?>






http://blog.roodo.com/taikobo0/archives/8671037.html



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  • 1 樓住戶:阿偉
    發表時間:2010-03-24

    http://tw.knowledge.yahoo.com/question/question?qid=1510020409088



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