How to display text while doing work in PHP?

Question

How do I show "loading" text in PHP while code (like a massive database query) is running?

This could be a good place to start: http://stackoverflow.com/questions/1305260/how-to-show-ajax-loading-gif-animation-while-the-page-is-loading — James, Sep 01 '11 at 05:05

s.webbandit · Answer 1 · 2011-09-01T05:41:19.620

3

You can use AJAX calls.

Browser shows "loading text"
Browser processes AJAX request
When the response would come back, "loading text" disappears and you can do something (for example Redirect to somewhere)

edited Sep 01 '11 at 05:41

answered Sep 01 '11 at 05:02

s.webbandit

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2

[AJAX](http://en.wikipedia.org/wiki/Ajax_%28programming%29) is written in javascript – tttony Sep 01 '11 at 05:10

score 0 · Accepted Answer · answered Sep 01 '11 at 05:10

Turn off output buffering and output the html and then start your big code.

apache_setenv('no-gzip', 1);
ini_set('zlib.output_compression', 0);
//if you are buffering output currently. Output buffering can be nested.
for ($i = 0; $i < ob_get_level(); $i++) { ob_end_flush(); } 
ob_implicit_flush(1);

Safari and IE have a 1k buffer, you probably have to fill that before by outputting blanks for example.

score 0 · Answer 3 · answered Sep 01 '11 at 05:27

With AJAX you can do it with help of Jquery library.

  <html>
    <head>

       <tittle>Page Tittle</tittle>
      <script type="text/javascript" src="/js/jQuery.min.js"></script>
      function loadingAjax(div_id)  //javascript function
       {  
        $("#"+div_id).html('<img src="ajax-loader.gif"> saving...');  
           // image displayed when the request started
        $.ajax({  
            type: "POST",  
            url: "script.php",        //php script that will return the database result
            data: "name=John&id=28",  
            success: function(msg){  
                $("#"+div_id).html(msg);  //result displayed after success
            }  
        });  
       } 
</head>
<body>
<a href="#" onclick="loadingAjax('myDiv');">save page</a>  
<div id="myDiv"></div>  
</body>

Here the image "ajax_loader.gif" will be displayed till your result from the database is ready.

Hope it helps.

How to display text while doing work in PHP?

3 Answers3