smartango

Due to page performance you should load javascript at the end of page (see http://developer.yahoo.com/performance/rules.html), at least all javascript you can defer to load. There are script that have to load at the very begin of page. But are you sure there is no option?

Well, actually this is a critical consideration on my own js script. When I wrote imagedata drupal example module I replaced {‘imagedata …} with a direct call to jquery plugin.

There are a lot of situation where javascript function is called where a data structure could be defined and a “caller function” can use that var to fire up function call.

Also, often execution could/must be deferred in a given order of execution, in order to make things work (have a look at my formhint plugin and problems with facebook like widget). (so defer attribute in script tag is of no use)

That said, it could be used some structure like:

<script>var datastruct = {type:'right',sel:"a > img"};</script>

and at the end of page (at a given time):

{syntaxhighlighter brush:javascript} <script> function functioncall(data){ $(data.sel).contextmenu(menu,data.type,data.timeout); } functioncall(datastruct);</script> {/syntaxhighlighter}

Ok, that’s work, and it could be used an array too …

<script>var datastruct = datastruct || new Array();datastuct.push({type:'right',sel:"a > img"});</script>

(.. here with caller function cycling on array)

But it could be used a more elegant (for me) solution: use script type=”text/html”

<script type="text/html" class="mydatas">{type:'right',sel:"a"}</script>

And a caller function can be:

function caller(class){
  $("."+class).each(function(i,el){
    eval('var m='+$(el).html());
    $(m.sel).contextmenu(menu,m.type,m.timeout);
  });
}

And the time when call function could be defined.

yes, found: http://www.haughin.com/code/simplepie/
and tried with php 5.3 installation … simply do not work

I recalled there was a problem in simplepie for assign new by reference, just downloaded newer code from http://simplepie.org/ … still same problem.

So

{syntaxhighlighter brush:bash}
sed ‘s/=&\ new/=\ new/’ simplepie.inc > Simplepie.php
{/syntaxhighlighter}

adding if ( ! defined('BASEPATH')) exit('No direct script access allowed'); to first line, removing ?> from last line, make things work.

Some comment on new by reference are in http://php.net/manual/en/language.references.php

On why and where reference are bad there is a beautiful article: http://schlueters.de/blog/archives/125-Do-not-use-PHP-references.html

and another on “strange” things that could happen: http://schlueters.de/blog/archives/141-References-and-foreach.html

This is my view of form hint plugin: show a div over with the title content inside, instead of replace text in input elements and match it with placeholder

simply run $(selector).formHint() on all form element and title is used as hint

See also http://code.google.com/p/jquery-watermark/

simple code to shuffle a table … with php shuffle:

$result = $mysql->query("SELECT id FROM $table ORDER BY id");
$rows = $result->num_rows;
$order = shuffle(range(1,$rows));
while($row=$result->fetch_row()) {
  $num=array_shift($order);
  $mysql->query("UPDATE $table SET rand_sort=$num WHERE id=".$row[0]);
}

added:
with MySQL RAND():

$result = $mysql->query("SELECT id FROM $table ORDER BY RAND()");
for($i=1;$row=$result->fetch_row();$i++) {
  $mysql->query("UPDATE $table SET rand_sort=$i WHERE id=".$row[0]);
}

comments?

This is my way to organize php for a simple jQuery frontend ajax based:

1.in a administration page include the php that generate html for each box
2.for each box setup behavior in Javascript
3.let each php manage POST request (for change/update) and GET request for show content

So in admin.php we could have something like that

<img src=”button.png” id=”btn_change” />
<div id=”box-profilo”>
<?php include “box-profilo.php”>
</div>

For setup behavior in javascript I use jQuery and an utility function (in admin.php):

CheckForm = function(d,f,o){return f.valid();};
   function addModBehav(link,div,url,form,cancel) {
   var revert = function() {
     $(div).load(url,function(){
	 $(link).show();
       });
   }
   $(link).click(function(){
       $(div).load(url+"?method=modify",
		   function(){
		     $(link).hide();
		     $(form).ajaxForm({target:div,
			   beforeSubmit:CheckForm,
			   success:function(){$(link).show();}});
		     $(cancel).click(revert);
		   });
       return false;
     });
 }
   $(function(){
       addModBehav("#btn_change","#box-profilo",
		   'box-profilo.php',"#form_profilo",
		   "#cancel");
});

box-profilo.php contains something like

<?php
if(isset($_POST['save'])) {
// save code
}
$method='view';
if(isset($_GET['method'])) {
$method=$_GET['method'];
}
if(method =='modify') {
?>
<form id=”form_profilo” action=”box-profilo.php” method=”post”>
….
<input type=”button” id=”cancel” />
</form>
<?php
} else {
// show data
}
?>

Used plugins:
ajaxForm plugin for function ajaxForm()
Validation plugin for function valid() (in CheckForm)