How do I dynamically center images?

Question 1

Question by Wilfred

With css and javascript/jquery, how do I center the images I have displayed vertically down a page? Let me draw a diagram.
This is what I have…

-------
|     |
|     |
-------
----------
|        |
|        |
----------
------
|    |
|    |
------

This is what I want

  -------
  |     |
  |     |
  -------
-----------
|         |
|         |
-----------
   -----
   |   |
   |   |
   -----

Answer

Answer by Brad

Brad

Set the following CSS on your centered image class:

display: block;
margin: 1em auto; /* the key here is auto on the left and right */

Answer

Answer by Starx

Starx

A small snippet will get this done

display: inline-block;
margin: 1em auto;

Using jQuery you can set the properties like:

$("img#selector").css({
    'display':'inline-block',
    'margin' : '1em auto'
});

Question 2

Question by Baruch

Baruch

I am trying to create a select drop-down list using php. Every time i try, i get an error.
Here is my code:

The function:

function dropDown(){


$options="<select>"; 
$connect = mysql_connect('localhost','id','pass') or die ("couldn't   connect!").mysql_error; 

mysql_select_db('db') or die('could not connect to database!');


$sql="SELECT * FROM DESC"; 
$result=mysql_query($sql); 


while ($row=mysql_fetch_array($result)) {  ****this is line 60

$name=$row["name"]; 

$options.="<option value="$name">".$name."</option>"; 
} 

$options.= "</SELECT>";
return "$options";
}

and then i just call it in my code

<?php  
 include ('includes/functions.php');
....



$list = dropDown();
echo "$list";


....
>

the error i get is:

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/garagenj/public_html/dispatch/includes/functions.php on line 60

Answer

Answer by JT Smith

JT Smith

If your table name is DESC then that’s your problem. It’s all about namespacing. You can’t even have a field named desc, I’ve tried. It errors everytime

Answer

Answer by Starx

Starx

SELECT * FROM DESC ??????

From what table
Or, if the table name is DESC. escape them with ticks

And You dont have start a new connection, every time you call the function. Put your connection part somewhere else

$connect = mysql_connect('localhost','id','pass') or die ("couldn't   connect!").mysql_error; 
mysql_select_db('db') or die('could not connect to database!');

function dropDown(){
    $options="<select>"; 
    $sql="SELECT * FROM `DESC`"; 
    $result=mysql_query($sql); 

    while ($row=mysql_fetch_array($result)) { 

        $name=$row["name"]; 

        $options.="<option value="$name">".$name."</option>"; 
    } 

    $options.= "</SELECT>";
    return $options;

}

Tag: dynamic

How do I dynamically center images?

Question by Wilfred

Answer by Brad

Answer by Starx

SELECT * FROM DESC ??????

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