PHP Programming Tips

Getting into the business of being a freelance programmer can be exciting, but also confusing for those who have a too broad scope of languages and skills. Sure, it can be useful to know a lot of things, but it can turn into a detriment when you’re trying to focus on one particular aspect of your skillset that you’re truly good at. PHP can make a great answer to your questions and offer you a great way to invest your time and skills – but it’s not the most suitable choice for everyone.

The most important thing to consider when thinking whether to market yourself as a freelance programmer towards people who need PHP is the matter of security. With security being such a top priority in today’s websites and Internet-related applications in general, you really have no excuse for letting your solutions slip in that regard in any way. If your websites fail to meet the basic expectations for a secure service, your clients are going to dwindle and eventually all go away.

Also, how good is your design? If you can offer a complete scripting + design package to your clients, it can instantly make your offer a much more attractive one. With that in mind, it should be noted that HTML and CSS aren’t that difficult to learn, so if you’re not that good in that area (or even can’t do anything at all), you should take some time to familiarize yourself with at least the basic concepts.

Learning HTML or Hypertext Markup Language does not require any professional IT experience. This computer application is as simple and easy as it may seem to be. Performing Hypertext in the Word document is as simple as linking a keyword to direct a reader into a specific link. These said links can either be found on the same or other pages with the link that carry on a much broader explanation and variety of other web links of the same topic. This basic HTML Tutorial would best describe common HTML tags needed in learning the fundamentals as well as advance HTML.

Date Validation in PHP

This tutorial will show how to Validate Date fields using PHP code in ‘dd/mm/yyyy’ Format. It is a good practice to validate the date value when it is obtained using forms through user input.

PHP CODE:

//Check whether the submission is made
if(!isset($_POST["hidSubmit"])){
//Declarate the necessary variables
$strdate="";
$strdate1="";
DisplayForm();
}
else{
$strdate=$_POST["txtdate"];
//Check the length of the entered Date value
if((strlen($strdate)<10)OR(strlen($strdate)>10)){
echo(“Enter the date in ‘dd/mm/yyyy’ format”);
}
else{
//The entered value is checked for proper Date format
if((substr_count($strdate,”/”))<>2){
echo(“Enter the date in ‘dd/mm/yyyy’ format”);
}
else{
$pos=strpos($strdate,”/”);
$date=substr($strdate,0,($pos));
$result=ereg(“^[0-9]+$”,$date,$trashed);
if(!($result)){echo “Enter a Valid Date”;}
else{
if(($date<=0)OR($date>31)){echo “Enter a Valid Date”;}
}
$month=substr($strdate,($pos+1),($pos));
if(($month<=0)OR($month>12)){echo “Enter a Valid Month”;}
else{
$result=ereg(“^[0-9]+$”,$month,$trashed);
if(!($result)){echo “Enter a Valid Month”;}
}
$year=substr($strdate,($pos+4),strlen($strdate));
$result=ereg(“^[0-9]+$”,$year,$trashed);
if(!($result)){echo “Enter a Valid year”;}
else{
if(($year<1900)OR($year>2200)){echo “Enter a year between 1900-2200″;}
}
}
}
DisplayForm();
}
//User-defined Function to display the form in case of Error
function DisplayForm(){
global $strdate;

Explanation
*Expression ^[0-9]+$
^ :-Indicates the beginning of the string
[0-9]+ :- indicates that the string begins with a number between (0-9) and is followed by numbers.
$ :- Indicates the end of the String

A PHP scripting block usually starts with . The best thing about PHP scripting block is that you can place it anywhere in the document. placed anywhere in the document.

On servers with shorthand support enabled you can start a scripting block with .

It is recommend that you use the standard form

< html >
< body >