Difference between revisions of "PHP-and-MySQL/C4/User-Registration-Part-2/English-timed"

|Welcome to the second part of the User registration tutorial.

|In this part we will check the existence of these forms. Let us just get rid of these values in these fields that we've typed.

|We are also going to move html tags.

|Consider I am encrypting for my login part... Let me just open this file "login dot php".... And we will have to make a few adjustments to my page here.

|So we need to change this "dbusername" value and our "dbpassword".  

|I don't have a "submit" variable at the moment.  

|So this will be equal to "dollar sign underscore POST" and now "submit".

|This is because when the user clicks the submit button here, this will hold a value of "Register".

|And this will say "if the user has clicked this button", then we can carry on with our code.

|Now, the other values we need to get are the name of the user. So, the fullname of the user. I will just type "fullname = $ underscore POST" and "fullname". You can just see evidence of this here .

|So, we are just mimicking the name given over here, once we have got fullname, username, password, repeat pasword, okay?

|So, we have got "fullname" and now we have "username".

|So "pasword" and "repeat password". Here is the "password" and "repeat password". I'm going to change these values. No need to type them out.

|If you are new to php I would suggest that you type these out again and again just for practice. So you won't forget them.

|So we have got all our values here.  

|So, if "submit".  I'll just echo them out to show you that all these have been submitted correctly.

|I suggest you do this for debugging. You might have spelt something wrong and its no good if you are trying to put data which is spelt wrong into your database.

|Here I will say echo the "username" and forward slash and "password". Then "repeat password" and then "fullname" of the user followed by the line terminator.  

|So we have got all the data here that we have extracted from our form.  

|So I will just comment this as "form data".

|If the form has been submitted, I am going to echo this out, to make sure it is there.

|Here if I click "Register" nothing happens. I have been clicking and nothing is being done.

|So here I will just type my full name and I can type my username and choose a password which will be "abc" for now.

|Click on "Register" and nothings happened.  

|So "if submit",  "POST submit".  

|This is why.  In our "form action" we need to set a "method" which is going to be "POST".

|We need a method of "POST" otherwise it's default as "GET".  Yes, you can see it all up here.  

|4:13

|So that's "Alex Garrett" and username "alex". This will be "abc" and "abc".  Click on "Register" and my data has been shown here.

|We can check if its correct. My fullname was "Alex Garrett". My username chosen was "alex" and of course "abc" here and here.

|And if you read up on Google or any search engine about "MD5 encryption" that's "M D 5". Let me just write this down for you. It is a very useful way of encrypting data.

|Let's just get rid of this.  Now everything is right. Md5's function in php takes a string or numerical value, string value or just a data value.

|Lets say I encrypt "alex" to Md5. Let's echo it out and refresh.

|Don't resend the data. So it should just come straight back from here and re-click on register.

|Let's go here and see if "if submit" is ok. Let's take out this condition and refresh.  

|So that is my name encrypted in Md5.

|It's always the same length and I believe its impossible to crack unless you encrypt a string and then you compare it to your two encrypted values.

|If you don't understand this I have a tutorial on "MD5 encryption". So don't worry. Just go ahead and watch it.

|Now I will say "if submit" and then our code.  

|My fullname, username and password are fine.  

|I will add this "MD5 encryption" around my submitted password and repeat password.

|Then if I echo out, lets say, "password" and just have a break and "repeat password".

|When I go to refresh or rather when I go to submit my form, I will say my password is "abc" and my repeat password is "abc".

|Register that.  

|You can see that my 2 encrypted passwords are identical and both of them are ready to be put in the database.

|Now if you say someone hacked into your database and finds out people's passwords which is typed in as abc, they will be able to get it easily.

|07;06

|Okay, we have got our passwords encrypted. Now we are going to strip any tags of our data and to do this we have strip tags.

|"strip tags".  This will strip HTML tags.

|Let me copy and past that down there.  

|Ok, that's done and lets go back and see that.

|I type in "html" here and for my username I say "body" and just keep my password as "abc".  

|Lets go and echo out "username" and just add a break.  

|Fullname.  Echoing out all that will be typed in here.  

|Lets go back and check. Didn't use the line terminator. Refresh and Resend the data.

|As you can see over here, we got "test" and "test". So whatever you type in here as tag or as html tag, its just blank.

|So you know some people can be funny and say my username is going to be an "image". Register. That doesn't work !

|But if we take say "alex" and we click "Register", its taken into account.  

|So that's it. In the next tutorial we will check if every single field is typed in as they are all required for registration.  

|Ok I'll see you in the next part. Bye.  This is _________ dubbing for the Spoken Tutorial project.