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AJAX [Returning Multiple Values]

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  • I've learned how to use AJAX, PHP and MySql to return database values but how do you handle multiple values?

    Does AJAX.lastvalue return an array or is there something I have to do to receive multiple values?

    In PHP do I have to do something special or simply;

    echo $var1
echo $var2[/code:2vyw9z40]

  • I cant say you what happens, but I can say you how you can try:

    --AJAX On "yourTag" completed

    -->Browser Log in console AJAX.LastData

    You have to experiment a bit.

  • You can return a tokenized string or a JSON object that C2 can interpret.

  • You can return a tokenized string or a JSON object that C2 can interpret.

    Could you possibly give me a small example and I'll work the rest out from there, thanks Magi

  • Make your PHP script to return a concatenated line like 

    echo $var1 . "|" . $var2[/code:2yudkrsv]
( the dot "." should be the way to concatenate in PHP IIRC, to make sure, be sure to look into the PHP manual or a website about PHP programming).

When you receive your AJAX line you can use the [url=https://www.scirra.com/manual/126/system-expressions]system expressions[/url] "tokenat", "tokencount", etc... to manipulate the string, according to the separator (in my example the "|" character).

tokenat(AJAX.lastdata,0,"|") should allow you to only retrieve $var1; tokenat(AJAX.lastdata,1,"|") => $var2

  • Multible values by json:

    Multi row:

    $arr = array();
while($row = mysqli_fetch_array($result,MYSQLI_ASSOC))
{
        arr[] = $row;
}
echo json_encode($arr);
[/code:hfj250k1]
AJAX.LastData -> [{"name":"Bob","secondName":"Meyer","isMember":1},{"name":"Dieter","secondName":"Miller","isMember":1}]
[img="https://dl.dropboxusercontent.com/u/95601836/multiphp2json.png"]

Single row(first result):
[code:hfj250k1]
$arr = array();
while($row = mysqli_fetch_array($result,MYSQLI_ASSOC))
{
        arr[] = $row;
}
echo json_encode($row[0]);
[/code:hfj250k1]
AJAX.LastData -> {"name":"Bob","secondName":"Meyer","isMember":1}
[img="https://dl.dropboxusercontent.com/u/95601836/singlephp2json.png"]

Then use a json plugin to work with this strings. For example: [url=https://www.scirra.com/forum/plugin-tools-object-array-in-construct-based-on-json_t147493]Tools[/url]
Some examples:
[img="https://dl.dropboxusercontent.com/u/95601836/getLastData.png"]

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  • Thank you for all the help, I got my code working and managed to edit it to what I wanted.

    Great help again, thank you.

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