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Okey, lets assume that your data are sanitized well, then look into the following.

extract — Extract function import the variable from an array to the current symbol table.
ie. if you have an associative array like $a = array(‘user_name’ => ‘midhun devasia’, ‘email_id’ => ‘mymail@mydomain.com’), and wanted to use this as variable name, we usually try this method $user_name = $a['user_name']; instead of that we will get all variable into our current symbol table by using extract function.

$a = array('user_name' => 'midhun devasia', 'email_id' => 'myemail@mydoamin.com');

extract($a);
echo "Hello ", $user_name, "Your email id is ", $email_id;

The first param is the array, and second param is optional , there you can pass to overwrite the variable values, add prefix etc options. see the PHP Manuel for more info.

compact — Create array containing variables and their values.
If you want to pass some variable values into an array as its key and values.

$user_name = "Midhun Devasia";
$email_id = "myemail@domain.com";

$result = compact("user_name", "email_id");

/*
 echo $result['user_name'] is Midhun Devasia
 */

The function parse_ini_file() parse a configuration file and parse_ini_string() will parse a configuration string, like if your config data came from database or other string format.

parse_ini_file() function return an associative array of configuration data from a given file.

Params:
filename : The filename of the ini file being parsed.
process_sections: By setting the process_sections parameter to TRUE, you get a multidimensional array, with the section names and settings included. The default for process_sections is FALSE

Sample Config File

; This is a sample configuration file
; Comments start with ';', as in php.ini
[first_section]
one = 1
five = 5
animal = BIRD

[second_section]
path = "/usr/local/bin"
URL = "http://www.example.com/~username"

[third_section]
phpversion[] = "5.0"
phpversion[] = "5.1"
phpversion[] = "5.2"
phpversion[] = "5.3"

PHP Code

<?php
	$settings = parse_ini_file('settings.ini');
	print_r($settings);
?>

Out Put 1

Array
(
    [one] => 1
    [five] => 5
    [animal] => BIRD
    [path] => /usr/local/bin
    [URL] => http://www.example.com/~username
    [phpversion] => Array
        (
            [0] => 5.0
            [1] => 5.1
            [2] => 5.2
            [3] => 5.3
        )

)

If the option value of process_sections is set as TRUE, the out put is as follows

PHP Code 2

<?php
	$settings = parse_ini_file('settings.ini', true);
	print_r($settings);
?>

Out Put 2

Array
(
    [first_section] => Array
        (
            [one] => 1
            [five] => 5
            [animal] => BIRD
        )

    [second_section] => Array
        (
            [path] => /usr/local/bin
            [URL] => http://www.example.com/~username
        )

    [third_section] => Array
        (
            [phpversion] => Array
                (
                    [0] => 5.0
                    [1] => 5.1
                    [2] => 5.2
                    [3] => 5.3
                )

        )

)

Everything is same as for parse_ini_string().
Reference: http://www.php.net/manual/en/function.parse-ini-file.php

Reference Links

1. XPath Syntax

2. XML Path Language (XPath)

3. XPath Examples .NET Framework 4

4. Introduction to using XPath in JavaScript

5. An XPath implementation for ActionScript 3.0.

6. PHP XPath Tutorial

7. jQuery XPath Selectors

HTTP URL

/*
Matches: https://tutorboy.com, http://tutorboy.com:8080/profile.html
Nonmatches: ftp://tutorboy.com, ftp://tutorboy.com/
*/
Expression : /(https?):\/\/([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})(:\d{1,4})?([-\w\/#~:.?+=&%@~]*)/

Email

/*
Matches: mail@mytutorboy.com, email@my-mail.com, info@mymail.mysite.net
Nonmatches: .@example.com, mittu@i-.com, ilov@example.a
*/
Expression : /^[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z_+])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9}$/

Valid HTML Hex code

/*
Matches: #fff, #1a1, #996633
Nonmatches: #ff, FFFFFF
*/
Expression : /^#([a-fA-F0-9]){3}(([a-fA-F0-9]){3})?$/

Match date: MM/DD/YYYY HH:MM:SS

/*
Matches: 04/30/1978 20:45:38
Nonmatches: 4/30/1978 20:45:38, 4/30/78
*/
Expression : /^\d\d\/\d\d\/\d\d\d\d \d\d:\d\d:\d\d$/

U.S. zip code

/*
Matches: 94941-3232, 10024
Nonmatches: 949413232
*/
Expression : /^\d{5}(-\d{4})?$/

U.S. currency

/*
Matches: $20, $15,000.01
Nonmatches: $1.001, $.99
*/
Expression : /^\$\(d{1,3}(\,\d{3})*|\d+)(\.\d{2})?$/

Dotted Quad IP address

/*
Matches: 127.0.0.1, 224.22.5.110
Nonmatches: 127.1
*/
Expression : /^(\d|[01]?\d\d|2[0-4]\d|25[0-5])\.(\d|[01]?\d\d|2[0-4]\d|25[0-5])\.(\d|[01]?\d\d|2[0-4]\d|25[0-5])\.(\d|[01]?\d\d|2[0-4]\d|25[0-5])$/

MAC address

/*
Matches: 01:23:45:67:89:ab
Nonmatches: 01:23:45, 0123456789ab
*/
Expression : /^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/

Type/format specifiers

/*
Matches: my number %d, Hello %s!!, %f, %’-20s
Nonmatches: my number %t, hello %p
*/
Expression : #(%[+-]?(([ 0]?)|('.)))-?(d*)(.d*)?[%bcdeufFosxX]#

PHP Code for Compress and Decompress files/folders. The code is based on Zend Framework 1.10.

Compress

<?php
include_once('Zend/Filter/Compress.php');
include_once('Zend/Filter/Decompress.php');
include_once('Zend/Filter/Compress/Zip.php');

$filter = new Zend_Filter_Compress(array(
'adapter' => 'Zip',
'options' => array(
'archive' => 'compressed.zip'
),
));

// For file
$source = '/opt/folder/image.jpg';
// For Folder
//$source = '/opt/folder/';

$compressed = $filter->filter($source);
// Returns true on success and creates the archive file

Decompress

$target_directory= '/opt/folder';

$filter = new Zend_Filter_Decompress(array(
'adapter' => 'Zip',
'options' => array(
'target' => $target_directory,
)
));

$compressed = $filter->filter('compressed.zip');
// Returns true on success and decompresses the archive file
// into the given target directory

If you want to use the Bz2 then include include_once(‘Zend/Filter/Compress/Bz2.php’); and change the “Zip” as “Bz2“. and so on for the kind of archives like Tar, Rar, Gz.

1 . // :TODO: Description
Indicates that there is more to do here.
2. // :BUG: [bugid] Description
Shows a known issue here. The comment should also explain the issue and optionally give a bug ID if applicable.
3. // :KLUDGE: Description
Indicates that the following code is not elegant or does not conform to best practices. This comment alerts others to provide suggestions about how to code it differently next time.
4. // :TRICKY: Description
Notifies developers that the subsequent code has a lot of interactions. Also advises developers that they should think twice before trying to modify it.

Smush.it can process JPG, GIF, and PNG images that are up to one megabyte in size. Converting GIF files to PNG files often produces substantial performance improvements. Here you can Smush your image files online.

Vew Demo Download

In my example, I used the JQuery and Ajaxupload plugin for the development. You can customize this easily. Image replacement with out refreshing your page.

Download the jQuery & Ajaxupload Js files from the site.

1. Put the jQuery and Ajaxupload into a folder called js or something, and include that in the HTML page.

HTML:

<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/ajaxupload.js"></script>

2. Create the image container and other related div and style. Here I have one main DIV called profile_pic and inside that a div with img element having the spinner icon, which is invisible at the first and will active while uploading. Then one more image element for the profile picture. Next is the “change my photo” button div.

HTML:

<body>
 <!-- // Container -->
 <div class='profile_pic'>
 <!-- // Spinner -->
 <div id="spinner" style="display:none">
 <img src="spinner_large.gif" border="0">
 </div>
 <!-- // Profile picture -->
 <img src='ep.jpg'  id="profile_img" />
 <!-- // Button Container -->
 <div class='change_button' id='change_button'>
 <!-- // Button -->
 <div class='change_button_text'>Change my photo</div>
 </div>
 </div>
</body>

3. Next is to style the container and other img tags for the better effect with the help of jQuery. Put the following css codes inside the <head> tag.

CSS:

<style type="text/css">
 div.profile_pic{
 position:relative;
 width:125px;
 }
 div.change_button{
 position:absolute;
 bottom:0px;
 left:0px;
 display:none;
 background-color:black;
 font-family: 'tahoma';
 font-size:11px;
 text-decoration:underline;
 color:white;
 width:125px;
 }
 div.change_button_text{
 padding:10px;
 }
 #spinner{
 position:absolute;
 }
</style>

4. Write the JavaScript to enable  file element activities.  There is no physical existence for the file element. But we create this with the help of Ajaxupload plugin.

JS for  fadein fadeout effect

<script type="text/javascript">
$(window).load(function(){
 // Store the button instance
 var button = $('#change_button');
 // Store the spinner image instance
 var spinner = $('#spinner');

 // Set the opacity to 0...
 button.css('opacity', 0);
 // Set the spinner position as the middle of the profile picture.
 spinner.css('top', ($('.profile_pic').height() - spinner.height()) / 2)
 spinner.css('left', ($('.profile_pic').width() - spinner.width()) / 2)

 // On mouse over those thumbnail
 $('.profile_pic').hover(function() {
 button.css('opacity', .5);
 button.stop(false,true).fadeIn(200);
 },
 function() {
 button.stop(false,true).fadeOut(200);
 });

JS for File Element

new AjaxUpload(button,{
 action: 'upload.php', // Action page
 name: 'myfile', // file element name
 onSubmit : function(file, ext){
 // Show the spinner while onsubmit
 spinner.css('display', 'block');
 // Yyou can disable upload button
 this.disable();
 },
 // In 'response' variable you will get the value from the upload.php
 onComplete: function(file, response){
 // Set the fadeout value.
 button.stop(false,true).fadeOut(200);
 // remove the Spinner after the upload.
 spinner.css('display', 'none');
 // Assign the new image as the profile picture.
 $('#profile_img').attr('src', response);
 // Enable upload button
 this.enable();
 }
 });

});
</script>

5. From the above AjaxUplaod function you can see the action file path “upload.php” and “myfile” is the file element name. You will get the in php by $_FILES['myfile']. The php file should return the image path of the uploaded image.  and the javascipt will receive the name in response variable.

Upload.php

<?php
 // Set the upload folder path
 $target_path = "uploads/";
 // Set the new path with the file name
 $target_path = $target_path . basename( $_FILES['myfile']['name']); 

 // Move the file to the upload folder
 if(move_uploaded_file($_FILES['myfile']['tmp_name'], $target_path)) {
 /*print the new image path in the page, and this will recevie the javascripts 'response' variable
You can add the resize and other image function here. */
 echo $target_path;
 } else{
 // Set default the image path if any error in upload.
 echo "default.jpg";
 }

?>

Now its ready to use.

View Demo Download