PHP Programming

The university solved slips for third year Bsc Computer Science are usually issued after the students satisfy the conditions set out by the examination body. The students also have to meet the conditions set out by the senate.

You cannot do that, since PHP is serverside and javascript is clientside. The best way is usually to have an ajax layer (a php file) to handle requests from the main php file. For example: You would have 3 files index.php, ajax.php, and functions.js The index.php is what people would see, and would include the functions.js javascript file. The functions.js file would then send requests to ajax.php. These requests could be a search query, a login request, etc... or any other object for that matter. Accessing javascript objects on demand is not possible though.

Creating an online store from scratch using PHP is a complex and arduous task. One has to consider a number of variables, the most important of which is security. Unless you have a considerable amount of experience and a specific goal in mind, it might be better to use software that has already been created. There are many open-source (FREE) applications available such as OSCommerce and Zen Cart with generic options and some customization flexibility. If you have a larger budget and want a store that is completely customized for your brand and products, you may consider hiring the services of a professional creative design company such as California Creative Studios and allowing them to create one for you. If you are still set on creating your own, by all means, go for it! There are a number of useful tutorials out there on shopping carts, credit card processing, user rating systems etc. Study major online stores to get ideas for good design practices, and be sure to keep php.net open in a tab at all times. Good luck!

1. Syntax errors: errors due to the fact that the syntax of the language is not respected.(The first type of error is a syntax error. You already know that syntax errors are caused when you don ' t obey the syntax rules of C#. A common syntax rule you might make in the beginning is forgetting to terminate each program statement with a semicolon.

   Intellisense does an excellent job of catching syntax errors. While you may hate the squiggly line

   that Intellisense displays, it ' s a lot easier for Intellisense to detect and isolate syntax errors than it is for you to do it yourself.)

2. Semantic errors: errors due to an improper use of program statements.( Logic errors are those errors that remain after all the semantic and syntax errors have been removed. Usually, logic errors manifest themselves when the result the program produces doesn ' t match the result your test data suggest it should produce. Most of the time, logic errors are found in the Process . Logic errors occur when you implement the algorithm for solving the problem incorrectly.

   The key to fixing logic errors is to be able to reproduce the error consistently. A repeatable logic error is much easier to track down and fix than an error that appears to be occurring randomly. you will learn the details of using some of the tools Visual Studio provides to help you detect and isolate program bugs.))

3. Logical errors: errors due to the fact that the specification is not respected(A semantic error occurs when you obey the syntax rules of the language but are using the statement out of context. For example, a sentence in English is expected to have a noun and a verb. Consider the sentence " The dog meowed. " This sentence does obey the rules of having a noun and a verb, but the context of the sentence is out of whack. Dogs don ' t meow, therefore the context of the statement is incorrect. The error message I showed you earlier:

   The name 'i' does not exist in the current context refers to a type of semantic error. There may well be a variable named i defined somewhere in the program, but it is not currently in scope. That is, you are trying to use i when it is out of scope.Intellisense does a good job of detecting semantic errors.)

This program only suits PHP. If you want a proper one try C program for it available on web

<body>

<?php

if(isset($_POST['submit']))

{

$text = $_POST['text'];

$string = mysql_real_escape_string($text);

$invert = strrev($string);

if($string == $invert)

{

echo "<br>Given number is a palindrome!!";

}

else

{

echo "<br>Given number is not a palindrome!!";

}

}

?>

<form method="post">

<input type="text" name="text" id="text" />

<input type="submit" name="submit" value="Submit" id="submit" onclick="<?php $_SERVER['PHP_SELF']; ?>" />

</form>

</body>

Please go to www.google.com, and search for "php upload photo script" or something alike. I'm sure you'll find somthing there.

There are many ways to do such a thing.

One would be to give the header a unique id on the home page and use CSS specify it's background image. Of course, if you're doing that, you might as well just add an image tag to it anyway.

If you're looking to add an image on that particular page, without modifying the element into which it's inserted, you could also do it using javascript:

<script type="text/javascript">

var URL = window.location.pathname;

var pageName = URL.substring(URL.lastIndexOf('/') + 1);

if(pageName == 'index.HTML'){

header = document.getElementById('pageHeader');

header.innerHTML = header.innerHTML + '<img src="headerimage.jpg">;

}

</script>

Here's a quick example on how to do it.

<?php if(isset($_POST['send'])) {

if($_POST['answer'] == 'My Answer')

echo 'You got it!';

else echo 'Wrong answer.';

}

?>

<form method="post" action="you_file_name_here">

What is the answer to this question?

<br>

<input type="text" name="answer">

<input type="submit" name="send" value="Check it!">

</form>

A PHP file will not be a video. Videos are commonly .wmv, .mov, .mp4, etc. PHP is a server scripting programming language. Since a PHP file is completely parsed on the server, you cannot download a PHP file, unless you use another script to enforce the download. But even that approach requires that the script be on the same server as the target one.

From $30,000 to $90,000.

Yes php 4.4.7 server support php 5 files. But most of the php 5 features are not supported by php 4.4.7 version

Consider your HTML

<p id="pid">Hello </p>

In javascript

document.getElementById('pid').innerHTML="world";

Remember "id" are unique on the HTML page hence js will always pick <p> where id=pid.

Dynamic programming languages are often refered to as 'weakly typed' which means that variables are not bound to a particular type until runtime. For example, C++ is a 'strongly typed language, while Perl is a 'weakly typed' or 'dynamic' language.

A strongly typed language requires that you specify a type:

int i = 0;

In that C++ snippet, an integer names i is created and assigned the value of 0. The following would not compile in C++:

int i = 0;

i = "Hello world";

This would fail because i has been declared to be an integer and can not be assigned a string value. The following code would succeed in a dynamic language like Perl:

i = 0;

i = "Hello world";

The type is not declared here at all, because it is not bound to a type until runtime. In the first statement, i is bound to an integer type but in the second statement it is bound to a string type.

While dynamic language are easier to program in, they are much slower than strongly typed languages and are generally regarded as less safe since checking is not done until run time.

TCP doesn't immediately acknowledge every single received TCP segment. If a

single segment is received it is necessary to wait for 100-200ms on the assumption

that the receiving application will probably generate a response of some kind. But

if there is delay in sending acknowledgement by the receiver then the network is

delayed.

If you know jquery it will help to write javascript easily to accomplish, what is needed.

There should not be any difficulties because the form is inside a ajax tab.

if you will write on

$(document).ready(function(){

// here all validation should work

})

You would have to do this using an AJAX request. The onchange event would trigger a Javascript function that would in turn send a request to the server, and handle the response.

This requires a fair bit of back-end code for handling the AJAX, and I would recommend using an existing library for that purpose. jQuery is the one that I am familiar with, and you could handle that change event like so:

<?php

if(array_key_exists('mytext', $_POST)){

echo "The text you posted is "{$_POST['mytext']}"";

exit;

}

?>

<script src="(jquery source URL here)" type="text/javascript"></script>

<!-- ... -->

<input type="text" id="mytext"></input>

<div id="result"></div>

<script type="text/javascript">

$("#mytext").change(function(){

$.post("myscript.php", {'mytext':$("#mytext").val()}, function(dat){

$("#result").HTML(dat);

});

});

</script>

You probably mean "hybernate"; that refers to a computer saving all contents of its memory (RAM) to hard disk, so that it can be turned off, kept off indefinitely without using power, then turned on again (and memory reloaded from the hard disk), to let the user continue right where he was. For instance, any documents that were open when the computer was hibernated will be immediately available after resuming.

We have two kinds of programming languages, Open Source and Close Source :)

Open Source like javascript and Close Source ":)" like .exe files (Compiled Files)

Open Source files like javascript wont be compiled and will be used as it wrote. if you think php is open source or not, i should tell you it's a different thing, the first thing you should be worry about is the security, javascript is open source and open source files are less or even unsecured files, it means everyone can see your source code, they can break down your security easily..

So what you should do? USE SOME ENCIPHER PROGRAM TO MAKE IT HARDER TO BREAK DOWN (it will just make it harder.. not impossible)

Close Source (Complied Files) are those that you write an code then it will be complied to something else to be understand by computers, like you write c# codes in Visual Studio and when you want to run it, your codes will be compiled to an exe application, then your computer will be able to run it.

Compiled Files is more secure but keep it in mind it don't mean it's unbreakable.. nowdays there are reverse programs out there.. :)

Wish i got your question right.. :)

It has to be done with Javascript. Though you could do something like this:
echo '';
?>