PHP1-1 PHP & SQL Xingquan (Hill) Zhu

PHP1-2 PHP&SQL  Relational Database systems  Structured Query Language: SQL  Access MySQL on Pluto server  Create table, add records, query, and delete records  PHP MySQL database access  Connect to MySQL server  Select database  Query  Show the results

PHP1-3 Relational database systems  A collection of tables of data  Each table can have any number of rows and columns of data  The columns of a table are named Attributes  Each row usually contains a value for each column  Rows of a table are often referred to as entries  Primary keys One column which uniquely identify the rows of the table  Both data values and primary key values in a table are called field IDFirst_nameLast_NameLobsterCrabAppleOrangeComments 1HillZhu2120Good 2HillFord1200Good 3FordJames0011Super

PHP1-4 Structured Query Language: SQL  Language for specifying access and modification to relational database  Different from most programming language  More like a structure form of English  Reserved words are not case sensitive  SELECT and select are equivalent  The whitespace separating reserved words and clauses is ignored  Commands can be spread across several lines  Simple SQL process  Create database  Use database  Create table  Add records  Search records

PHP1-5 Access SQL on Pluto  Download putty (  Download -> putty.exe -> open

PHP1-6 Access SQL on Pluto Your fau ID Username: Your fau ID Password: Your fau ID

PHP1-7 Access SQL on Pluto Your FAU ID again MySql version

PHP1-8 You are not able to create a database on Pluto, but select your own database  Use YourFAUID;  You are only able to use your own db, TSG created for you

PHP1-9 Create a table  create table orderTbl(ID int not null primary key auto_increment, first_name varchar(30), last_name varchar(30), lobster int, crab int, apple int, orange int, comments varchar(30)); Table name, you name it

PHP1-10 Insert Records  Insert into orderTbl(ID, first_name, last_name, lobster, crab, apple, orange, comments) values (1, “Hill”, “Zhu”, 2, 1, 2, 0, “Good”);

PHP1-11 Query the database  List all the records  Select * from orderTbl;

PHP1-12 Query the database  Select first_name, last_name from orderTbl;

PHP1-13 Query the database  Select * from orderTbl where first_name=“Hill”;

PHP1-14 Delete records  Delete from table where xx=y  Delete from orderTbl where last_name=“Ford”;

PHP1-15 PHP&SQL  Relational Database systems  Structured Query Language: SQL  Access MySQL on Pluto server  Create table, add records, query, and delete records  PHP MySQL database access  Connect to MySQL server  Select database  Query  Show the results

PHP1-16 An Important Step  Login into pluto mySQL server  Execute the following command  SET PASSWORD FOR = OLD_PASSWORD(‘yourfauid’);  Otherwise, you will not be able to connect to mySQL server  Error message “Client does not support authentication protocol ”  Some sort of protocol problem

PHP1-17 Php connect to MySQL server  Connect to a MySQL server  $db = mysql_connect($hostname, $username, $userpasswd);  Select database  $er = mysql_select_db("customer", $db);  $hostname="localhost";  $username="hill";  $userpasswd="hill";  $db = mysql_connect($hostname, $username, $userpasswd);  if (!$db)  {  print ("Error - Could not connect to MySQL");  exit;  } Database.php It’s YourFauId if use pluto

PHP1-18 PHP SQL Query  $qresult = mysql_query($query);  The query string should not end with a semicolon.  Return “false” on error  Return a complex “resource” structure on success  $num_rows = mysql_num_rows($qresult);  $num_fields = mysql_num_fields($qresult);  $row = mysql_fetch_array($qresult);

PHP1-19 PHP SQL Query  $row = mysql_fetch_array($qresult);  Calling Mysql_fetch_array() each time will return one row of the retrieved records (from the top to the bottom)  $row is a special array  It has two elements for each field  The first element consists of the system assigned key (0, 1, 2…) along with the field value  The second element uses attribute name as the key (“first_name”…), along with the field value  So you can use either of the following forms $row[0], $row[1]…. $row[“first_name”], $row[“last_name”]….

PHP1-20 PHP SQL Query  A simple PHP query example Customer.htmlaccesscustomer.php

PHP1-21 PHP Insert A record  $sqlquery = INSERT INTO $table VALUES($id, $first_name, $last_name, $lobval, $crbval, $appval, $orgval,$comments);  Insert order information into the database Formselection.phpFormselection.php formcheckout.phpformcheckout.php formprocesswithDB.php mysqlDBProcess.inc

PHP1-22 PHP&SQL  Relational Database systems  Structured Query Language: SQL  Access MySQL on Pluto server  Create table, add records, query, and delete records  PHP MySQL database access  Connect to MySQL server  Select database  Query  Show the results