1. Start by establishing a connection to the MySQL database.
First, we should create an infostar table in a database in MySQL:
Follow the steps of testing MySQL and manually create the table we need after seeing the "mysql>" prompt:
mysql>CREATE DATABASE mydb
mysql>USE mydb
mysql>CREATE TABLE infostar(
->name VARCHAR(25),
-> ;email VARCHAR(25),
->choice VARCHAR(10));
Okay, the table is created.Next, create a meeting form with users (pure HTML file)
diaocha.htm
New Document </ TITLE> <br></HEAD> <br><br><BODY BGCOLOR="#CCCCCC"> <br><center> ; <br><form method="post" action="diaocha.php"> <br><table border> <br><tr><td>Name: <br><td> <br><input type="text" name="name" size="20" maxlength="20" value=""> <br><tr><td>Email: <br><td> ; <br><input type="text" name="email" size="20" maxlength="20" value=""> <br><tr><td>Please select: <br><td> <br><input type="radio" name="choice" value="apple">Apple<br><input type="radio" name="choice" value="orange" >Orange<br><input type="radio" name="choice" value="pear">Pear <br><br> <br><input type="radio" name="choice" value="coconut">Coconut<br><input type="radio" name="choice" value="watermelon">Watermelon<br><input type="radio" name="choice" value= "banana">banana<br></table> <br><p> <br><input type="submit" name="submit_button" value="OK"> <br><input type="reset" name="reset_button" value="Reset"> <br></form> <br></BODY> <br></HTML> <br><br>its format As follows: <br><br>What fruit do you like to eat<br>Name: but ><br>Let’s create a PHP program to receive and process the information from the diaocha.htm form<br><br>diaocha.php <br><br><?php <br>/* Define some related variables, For use by the mysql_connect() function below*/ <br>$hostname="localhost"; <br>$username="root"; <br>$password=""; <br>$dbname="mydb"; <br><br>/* Used to store the email address of the site administrator*/ <br>$adminaddress="webmaster@youweb.com"; <br><br>/* This is the table we just created to store User data*/ <br>$userstable="infostar" ; <br><br>/* Establish a connection below*/ <br>mysql_connect($hostname,$username,$password) or die ("Unable to connect database" ); <br><br>/* Select the database mydb below. Adding the (@) symbol before the function will suppress the display of error messages.*/ <br>@mysql_select_db("$dbname")or die("Unable ro select database"); <br><br>print"<center>"; <br>print"Hello:$name."; <br>print"<br><br>"; <br>print"Your email is:$email<br><br>"; <br>print"Thank you for your participation<br><br>"; <br><br><br>/* Put The information is inserted into the table infostar*/ <br>/* Because the database table was selected using the mysql_select_db function earlier. Therefore, there is no need to enter the table name below*/ <br>$query="INSERT INTO $userstable VALUES('$ name','$email','$choice')"; <br>$result=mysql_query($query); <br><br>print"We have saved your information in the database."; <br> <br>/* Close the database connection*/ <br>mysql_close(); <br>?> Easy. <br><br>We have stored the information in the database, so how can we browse the data? <br>Next, we try to list all the friends who like to eat apples and create the apple.php file <br><br>apple.php <br><br><?php <br>/* Define some related variables for use by the mysql_connect() function below*/ <br>$hostname="localhost"; <br> $username="root"; <br>$password=""; <br>$dbname="mydb"; <br>$userstable="infostar" ; <br><br>/* Establish a connection below and select Database*/ <br>mysql_connect($hostname,$username,$password) or die ("Unable to connect database"); <br>@mysql_select_db("$dbname")or die("Unable ro select database"); <br><br>/* Select all users who like Apple*/ <br>$query="SELECT * FROM $userstable WHERE choice='apple'"; <br>$result=mysql_query($query); <br><br>/* Calculate how many such users there are*/ <br>$number=mysql_num_rows($result); <br><br>/* Display the results*/ / <br>$i=0; <br>IF ($number==0){ <br>print"<center><p>No one likes Apple</center> ";} <br>ELSE { <br>print"<center><p>Users who like apples are: $number <br><br>"; <br>WHILE ($i<$number): <br>$name =mysql_result($result,$i,"name"); <br>$email=mysql_result($result,$i,"email"); <br>print"$name likes to eat apples<br>"; <br>print"Email address: $email<br><br>"; <br>$i++; <br>endwhile; <br>print"</center>"; <br>} <br>?> ; <br><br>Call apple.php in the browser and see what appears. <br><br>
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