$_GET[] Simple Usage and Brief Description

$_GET[] is a PHP function. Mostly PHP Personal Functions starts from underscore "_".
$_GET[] is used to get value from other file. Example is shows bellow

I created 1st file with name : form.html

---

 <form action="index.php" method="get"> <!--Action is used to sand data to "index.php" file-->  
 <!--  
 ##################################################  
 # Table is used to align data with certain order #  
 ##################################################  
 -->  
 <table>  
 <tr><td><label for="FName">Type Your 1st Name:</label></td><td><input type="text" name="FName" placeholder="Type 1st Name" /></td></tr> <!--name attribute is used to get value at index.php-->  
 <tr><td><label for="LName">Type Your 1st Name:</label></td><td><input type="text" name="LName" placeholder="Type Last Name" /></td></tr> <!--placeholder is used to show guidance -->  
 <tr><td><label for="Number">Type Your 1st Name:</label></td><td><input type="text" name="Number" placeholder="Type your number" maxlength="10" /></td></tr>  
 <tr><td>&nbsp;</td><td align="left"><input type="submit" value="submit" /></td></tr> <!--&nbsp; is used to add spance-->  
 </table>  
 </form>  

Note : form.html was separate file and data is sent to index.php

Now I created 2nd file with name : index.php

---

 <?php   
      $fname = $_GET[FName]; // Here I got 1st name data   
      $lname = $_GET[LName]; # Here I got Last name data  
      $number = $_GET[Number]; /* Here I got number data */  
      //---------------------------------------------------------//  
      // I used different Comments styles above to remind them  //  
      // I used different Variables styles bellow to remind them //  
      //---------------------------------------------------------//  
      echo "User First Name is : {$fname} <br />"; # Variable with curly brackets within double qoutes  
      echo "User Last Name is : $lname <br />"; # Variable without curly brackets within double qoutes  
      echo "User Number is : " . $number # Variable with dot operator  
 ?>  

Here I got URL as :

http://www.qwc.me/index.php?FName=Samee+Ullah&LName=Feroz&Number=3234223945

Now try to understand this line

FName=Samee+Ullah&LName=Feroz&Number=3234223945 

Here you need to understand 3 things
after URL :

1. http://www.qwc.me/index.php = URL Main Part
2. ?  = Question Mark
3.  FName=Samee+Ullah = Value

this value is sent to index.php