[英]How to cast a php array into javascript array
I run a mysql query and get the results successfully. 我运行一个mysql查询并成功获取结果。 However, I cannot read the elements of the array from javascript side. 但是,我无法从javascript端读取数组的元素。 Can anyone help?? 有人可以帮忙吗?
//JAVASCRIPT makes a request
function profiles(){
$.post('dbConn.php', { opType:"getProfileList" }, fillProfileCombo, "text");
}
function fillProfileCombo(res) {
alert(res);
}
//dbConn.php takes the request , gets the result and passes via echo as it is shown as follows:
//RETURN PROFILE LIST
else if (!strcmp($opType, "getProfileList")){ //no param is coming
$connect = mysql_connect( $db_host, $db_user, $db_pass ) or die( mysql_error() );
mysql_select_db( $db_name ) or die( mysql_error() );
$profiles = mysql_query(" SELECT DISTINCT profileName FROM `map_locations` ");
$row = mysql_fetch_array($profiles);
/*while() {
echo $row['FirstName'] . " " . $row['LastName'];
echo "<br />";
}
*/
//$data = array();
//$row = mysql_fetch_assoc($profiles)
/*while($row = mysql_fetch_assoc($profiles))
{
$data[] = $row;
}*/
if ($row){
echo $row;
} else {
echo "ERROR occured";
}
}
//PROBLEM: //问题:
//when I change echo $row; //当我改变echo $ row; into echo $row[0]; 进入echo $ row [0]; , I see the first element in an alert box...query is definitely working.. ,我看到了警报框中的第一个元素...查询绝对有效。
//however when I change res to res[0], it does not show anything - which is normal because I do not know how to cast php array into js array.. //但是,当我将res更改为res [0]时,它什么也没有显示-这是正常现象,因为我不知道如何将php数组转换为js数组。
function fillProfileCombo(res) {
alert(res[0]); // does not work..
}
I do not want to use json by the way... I am not very good at. 我不想顺便使用json ...我不太擅长。 I do not want to mess it up. 我不想弄乱它。 Any suggestion and help is appreciated. 任何建议和帮助表示赞赏。
// PHP
$res = array();
while ($row = mysql_fetch_array($profiles)) {
$res[] = $row['profileName'];
}
header('Content-type: application/json');
echo json_encode($res);
// JavaScript
$.post('dbConn.php', { opType:"getProfileList" }, function(data) {
alert(data.length + " profiles returned");
}, "json");
Thanks Phil..This works now.. I followed your way by changing sth.. Maybe it was working but I couldnt run it. 谢谢菲尔..这现在可以工作..我按照您的方式更改了某件事..也许它正在工作,但我无法运行它。 Very similar except a couple of changes. 非常相似,除了一些更改。 I changed it as like this: 我将其更改为:
//PHP // PHP
$data = array();
while($row = mysql_fetch_assoc($profiles))
{
$data[] = $row;
}
if ($data){
echo json_encode($data);
} else {
echo $data;
}
//JS // JS
function profiles(){
//$.post('dbConn.php', { opType:"getProfileList" }, fillProfileCombo, "json");
$.post('dbConn.php', { opType:"getProfileList" }, fillProfileCombo, "json");
}
function fillProfileCombo(data) {
alert(data[1].profileName);
}
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