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  1. #1
    Senior Member shoffman3572's Avatar
    Join Date
    Jul 2008
    Location
    Fullerton, CA
    Posts
    137
    Member #
    16990
    Maybe someone here has a clue as to why this isn't working...

    Here's the javascript:

    function verify()
    {
    $.post("/test/testCheck.php", {variable1: 1, variable2: 2}, function(data) { alert ("Made it here: data =" + data +""); } );
    }


    Here's the php:

    <?
    $var1 = $_POST['variable1'];
    $var2 = $_POST['variable2'];
    echo $var1 . " - " . $var2;
    if($LogFile=fopen("/var/log/webserver/nameCheck2.log","a")) {

    $globalVars=var_export($_REQUEST,TRUE);
    fwrite($LogFile,$globalVars."\n");
    fclose($LogFile);
    }
    ?>
    when I check the log file produced - I see the two variables being passed to the php file. Whether I PRINT or ECHO var1 and var2 doesn't make any difference... I have also tried using $.ajax instead and I still get the same thing - the data is being sent to the php file, the php does work - it's just not returning the information to the javascript function.. any ideas?

  2.  

  3. #2
    Unpaid WDF Intern TheGAME1264's Avatar
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    Dec 2002
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    Not from USA
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    425
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    2783 times
    You have to output it as XML. Make sure you're returning the correct text/xml header too. About 95% of AJAX problems where the information isn't passed back are caused by this.

    jQuery in particular is really anal about looking for a properly formatted XML document, which is done on the PHP side of things.
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  4. #3
    Junior Member
    Join Date
    May 2011
    Location
    Austin, TX
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    6
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    27812
    Liked
    2 times
    Here's a quick example of an AJAX-PHP submission via POST and additional callback from PHP to AJAX to return a successful submission:


    [COLOR=rgb(20, 20, 20)][COLOR=rgb(20, 20, 20)]1) Add to form page header:[/COLOR][/COLOR]
    Code:
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js" type="text/javascript"></script>
    <script type="text/javascript">
    $(document).ready(function(){
    $('#FirstName').val("");
    $('#LastName').val("");
    });
    function postPHP(){
    $.post("update.php", { 'FirstName': $('#FirstName').val(), 'LastName': $('#LastName').val() },
    function(data){
    //Successful POST returns Alert
    alert(data);
    });
    }
    </script>



    [COLOR=rgb(20, 20, 20)]2) Set up the form(doesn't require <form> tags for an AJAX call):[/COLOR]

    Code:
    <input type='text' name="FirstName" id="LastName" /><br>
    <input type='text' name="LastName" id="LastName" /><br>
    <input type="submit" onclick="javascript:postPHP();" value="Post to PHP" />



    [COLOR=rgb(20, 20, 20)]3) Add a callback function to your PHP to indicate whether or not the POST was successful:[/COLOR]


    Code:
    <?php
    $FirstName = $_POST['FirstName'];
    $LastName = $_POST['LastName'];
    echo $FirstName;
    echo $LastName;
    //Callback to form page to indicate a successful POST
    function talkBack($callback){
    $data = "AJAX-PHP POST";
    $callback($data);
    }
    function myCallback($data){
    print ' was successfully passed using ' . $data . "\n";
    }
    talkBack('myCallback');
    ?>

    [COLOR=rgb(20, 20, 20)]Hope this helps and let me know if you'd like a copy of the full source for a working example.[/COLOR]



    [COLOR=rgb(20, 20, 20)]Brandon[/COLOR]


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