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Coldfusion and PHP introduction

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Read data from and update data to databases and tables. Create dynamic data-driven pages ... PROMPT stuff to put out to screen. TTITLE 'title to put at top of ... – PowerPoint PPT presentation

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Title: Coldfusion and PHP introduction


1
Coldfusion and PHP introduction
  • University of California, Berkeley
  • School of Information
  • IS 257 Database Management

2
Lecture Outline
  • Review
  • Databases for Web Applications Overview
  • ColdFusion
  • DiveShop in ColdFusion
  • PHP
  • DiveShop in PHP
  • More on ORACLE and SQL-Plus

3
Lecture Outline
  • Review
  • Databases for Web Applications Overview
  • ColdFusion
  • DiveShop in ColdFusion
  • PHP
  • DiveShop in PHP
  • More on ORACLE and SQL-Plus

4
Dynamic Web Applications 2
5
Server Interfaces
Adapted from John P Ashenfelter, Choosing a
Database for Your Web Site
6
Web Application Server Software
  • ColdFusion
  • PHP
  • ASP
  • All of the are server-side scripting languages
    that embed code in HTML pages

7
Lecture Outline
  • Review
  • Databases for Web Applications Overview
  • ColdFusion
  • DiveShop in ColdFusion
  • PHP
  • DiveShop in PHP
  • Introduction to ORACLE and SQL-Plus

8
Web Application Server Software
  • ColdFusion
  • PHP
  • ASP
  • All of the are server-side scripting languages
    that embed code in HTML pages

9
ColdFusion
  • Developing WWW sites typically involved a lot of
    programming to build dynamic sites
  • e.g. Pages generated as a result of catalog
    searches, etc.
  • ColdFusion was designed to permit the
    construction of dynamic web sites with only minor
    extensions to HTML through a DBMS interface

10
ColdFusion
  • Started as CGI
  • Drawback, as noted above, is that the entire
    system is run for each cgi invocation
  • Split into cooperating components
  • NT service -- runs constantly
  • Server modules for 4 main Web Server API (glue
    that binds web server to ColdFusion service)
    Apache, ISAPI, NSAPI, WSAPI
  • Special CGI scripts for other servers

11
What ColdFusion is Good for
  • Putting up databases onto the Web
  • Handling dynamic databases (Frequent updates,
    etc)
  • Making databases searchable and updateable by
    users.

12
Requirements
  • Unix or NT systems
  • Install as SuperUser
  • Databases must be defined via data source names
    (DSNs) by administrator

13
Requirements and Set Up
  • Field names should be devoid of spaces. Use the
    underscore character, like new_items instead of
    "new items."
  • Use key fields. Greatly reduces search time.
  • Check permissions on the individual tables in
    your database and make sure that they have
    read-access for the username your Web server uses
    to log in.
  • If your fields include large blocks of text,
    you'll want to include basic HTML coding within
    the text itself, including boldface, italics, and
    paragraph markers.

14
Templates
  • Assume we have a database named
    contents_of_my_shopping_cart.mdb -- single table
    called contents...
  • Create an HTML page (uses extension .cfm), before
    ltHEADgt...

15
Templates cont.
  • ltCFQUERY NAME cart" DATASOURCEcontents_of_my_s
    hopping_cart"gt
  • SELECT FROM contents lt/CFQUERYgt
  • ltHEADgt
  • ltTITLEgtContents of My Shopping Cartlt/TITLEgt
  • lt/HEADgt
  • ltBODYgt
  • ltH1gtContents of My Shopping Cartlt/H1gt
  • ltCFOUTPUT QUERY cart"gt
  • ltBgtItemlt/Bgt ltBRgt
  • Date_of_item ltBRgt
  • Price ltPgt
  • lt/CFOUTPUTgt
  • lt/BODYgt
  • lt/HTMLgt

16
Templates cont.
Contents of My Shopping Cart
Bouncy Ball with Psychedelic Markings
12 December 1998
0.25
Shiny Blue Widget 14
December 1998 2.53
Large Orange Widget
14 December 1998
3.75
17
CFIF and CFELSE
ltCFOUTPUT QUERY cart"gt Item Item
ltBRgt ltCFIF Picture EQ""gt ltIMG
SRCgeneric_picture.jpg"gt ltBRgt ltCFELSEgt
ltIMG SRC"Picture"gt ltBRgt lt/CFIFgt lt/CFOUTPUTgt
18
More Templates
ltCFQUERY DATASOURCE AZ2gt INSERT INTO
Employees(firstname, lastname, phoneext)
VALUES(firstname, lastname, phoneext)
lt/CFQUERYgt ltHTMLgtltHEADgtltTITLEgtEmployee
Addedlt/TITLEgt ltBODYgtltH1gtEmployee
Addedlt/H1gt ltCFOUTPUTgt Employee ltBgtfirstname
lastnamelt/Bgt added. lt/CFOUTPUTgtlt/BODYgt lt/HTMLgt
19
CFML ColdFusion Markup Language
  • Read data from and update data to databases and
    tables
  • Create dynamic data-driven pages
  • Perform conditional processing
  • Populate forms with live data
  • Process form submissions
  • Generate and retrieve email messages
  • Perform HTTP and FTP function
  • Perform credit card verification and
    authorization
  • Read and write client-side cookies

20
ColdFusion Diveshop
  • Examples from Fusion

21
Lecture Outline
  • Review
  • Databases for Web Applications Overview
  • ColdFusion
  • DiveShop in ColdFusion
  • PHP
  • DiveShop in PHP
  • More on ORACLE and SQL-Plus

22
PHP
  • PHP is an Open Source Software project with many
    programmers working on the code.
  • Commonly paired with MySQL, another OSS project
  • Free
  • Both Windows and Unix support
  • Estimated that more than 250,000 web sites use
    PHP as an Apache Module.

23
PHP Syntax
  • Similar to C or Java (note lines end with )
  • Includes most programming structures (Loops,
    functions, Arrays, etc.)
  • Loads HTML form variables so that they are
    addressable by name

ltHTMLgtltBODYgt lt?php myvar Hello World
echo myvar ?gt lt/BODYgtlt/HTMLgt
24
Combined with MySQL
  • DBMS interface appears as a set of functions

ltHTMLgtltBODYgt lt?php db mysql_connect(localhost
, root) mysql_select_db(mydb,db) result
mysql_query(SELECT FROM employees,
db) Printf(First Name s ltbrgt\n,
mysql_result(result, 0 first) Printf(Last
Name s ltbrgt\n, mysql_result(result, 0
last) ?gtlt/BODYgtlt/HTMLgt
25
Diveshop PHP
  • Examples on Dream…

26
ASP Active Server Pages
  • Another server-side scripting language
  • From Microsoft using Visual Basic as the Language
    model (VBScript), though Javascript (actually MS
    Jscript) is also supported
  • Works with Microsoft IIS and gives access to ODBC
    databases
  • Most commonly used for Access or MS SQL Server

27
ASP Syntax
lt SQL"SELECT last, first FROM employees
ORDER BY last" set conn
server.createobject("ADODB.Connection")
conn.open employee" set peopleconn.execute(
SQL) gt lt do while not people.eof set
resultlinepeople(0) , people(1) ltBRgt
Response.Write(resultline)
people.movenext loopgt lt people.close gt
28
Lecture Outline
  • Review
  • Databases for Web Applications Overview
  • ColdFusion
  • DiveShop in ColdFusion
  • PHP
  • DiveShop in PHP
  • More on ORACLE and SQL-Plus

29
Today
  • More on SQL and SQLPlus for data manipulation and
    modification

30
SELECT
  • Syntax
  • SELECT DISTINCT attr1, attr2,…, attr3 as
    label, function(xxx), calculation, attr5, attr6
    FROM relname1 r1, relname2 r2,… rel3 r3 WHERE
    condition1 AND OR condition2 ORDER BY attr1
    DESC, attr3 DESC

31
CREATE SYNONYM
  • CREATE SYNONYM newname FOR oldname
  • CREATE SYNONYM BIOLIFE for ray.BIOLIFE

32
SELECT Conditions
  • equal to a particular value
  • gt greater than or equal to a particular value
  • gt greater than a particular value
  • lt less than or equal to a particular value
  • ltgt not equal to a particular value
  • LIKE wom_n (Note different wild card)
  • IN (opt1, opt2,…,optn)

33
Aggregate Functions
  • COUNT(dataitem)
  • AVG(numbercolumn)
  • SUM(numbercolumn)
  • MAX(numbercolumn)
  • MIN(numbercolumn)
  • STDDEV(numbercolumn)
  • VARIANCE(numbercolumn)

34
Numeric Functions
  • ABS(n)
  • ACOS(n)
  • ASIN(n)
  • ATAN(n)
  • ATAN2(n, m)
  • CEIL(n)
  • COS(n)
  • COSH(n)
  • ROUND(n)
  • SIGN(n)
  • SIN(n)
  • SINH(n)
  • SQRT(n)
  • TAN(n)
  • TANH(n)
  • TRUNC(n,m)
  • EXP(n)
  • EXP(n)
  • FLOOR(n)
  • LN(n)
  • LOG(m,n)
  • MOD(n)
  • POWER(m,n)

35
Character Functions returning character values
  • CHR(n)
  • CONCAT(char1,char2)
  • INITCAP(char)
  • LOWER(char)
  • LPAD(char, n,char2), RPAD(char, n,char2)
  • LTRIM(char, n, cset), RTRIM(char, n, cset)
  • REPLACE(char, srch, repl)
  • SOUNDEX(char)
  • SUBSTR(char, m, n)
  • SUBSTRB(char, m, n)
  • TRANSLATE(char, from, to)
  • UPPER(char)

36
Character Function returning numeric values
  • ASCII(char)
  • INSTR(char1, char2,m, n)
  • INSTRB(char1, char2,m, n)
  • LENGTH(char)
  • LENGTHB(char)

37
Date functions
  • ADD_MONTHS(dt, n)
  • LAST_DAY(d)
  • MONTHS_BETWEEN(d1, d2)
  • NEW_TIME(d, z1, z2) -- PST, AST, etc.
  • NEXT_DAY(d, dayname)
  • ROUND(d, fmt) -- century, year etc.
  • SYSDATE
  • TRUNC(d, fmt) -- century, year, etc.

38
Conversion Functions
  • CHARTOROWID(char)
  • CONVERT(char, dchar, schar)
  • HEXTORAW(char)
  • RAWTOHEX(raw)
  • ROWIDTOCHAR(rowid)
  • TO_CHAR (date, fmt)
  • TO_DATE(char, fmt)
  • TO_NUMBER(char,fmt)
  • TO_MULTIBYTE(char)
  • TO_SINGLE_BYTE(char)

39
Create Table
  • CREATE TABLE table-name (attr1 attr-type
    CONSTRAINT constr1 PRIMARY KEY, attr2 attr-type
    CONSTRAINT constr2 NOT NULL,…, attrM attr-type
    CONSTRAINT constr3 REFERENCES owner.tablename(attr
    name) ON DELETE CASCADE, attrN attr-type
    CONSTRAINT constrN CHECK (attrN UPPER(attrN)),
    attrO attr-type DEFAULT default_value)
  • Adds a new table with the specified attributes
    (and types) to the database.
  • NOTE that the CONSTRAINT and name parts are
    optional)

40
Create Table
  • CREATE TABLE table-name (
  • attr1 attr-type PRIMARY KEY,
  • attr2 attr-type NOT NULL,
  • …, attrM attr-type REFERENCES
    owner.tablename(attrname) ON DELETE CASCADE,
  • attrN attr-type CHECK (attrN UPPER(attrN)
  • attrO attr-type DEFAULT default_value)
  • Without CONSTRAINT and name parts

41
Types
  • VARCHAR2(size)
  • NUMBER(p, s)
  • LONG -- long char data
  • DATE -- from 4712BC to 4714 AD
  • RAW(size) -- binary
  • LONG RAW -- large binary
  • ROWID -- row reference
  • CHAR(size) -- fixed length characters

42
Alter Table
  • ALTER TABLE table-name ADD attr1 attr-type
  • ALTER TABLE table-name ADD attr1 CONSTRAINT xxx
    constrainvalue
  • ALTER TABLE table-name MODIFY attr1
    optiontochange
  • ALTER TABLE table-name DROP COLUMN attr1
  • Adds, drops or modifies a column in an existing
    database table.
  • Note constrainvalue is any column constraint
    like PRIMARY KEY, REFERENCES, etc.

43
INSERT
  • INSERT INTO table-name (attr1, attr4, attr5,…,
    attrK) VALUES (val1, val4, val5,…, valK)
  • OR
  • INSERT INTO table-name SELECT col1, col2, col3 as
    newcol2, col4 FROM xx, yy WHERE where-clause
  • Adds a new row(s) to a table.

44
DELETE
  • DELETE FROM table-name WHERE ltwhere clausegt
  • Removes rows from a table.

45
UPDATE
  • UPDATE tablename SET attr1newval, attr2
    newval2 WHERE ltwhere clausegt
  • changes values in existing rows in a table (those
    that match the WHERE clause).

46
DROP Table
  • DROP TABLE tablename
  • Removes a table from the database.

47
CREATE INDEX
  • CREATE UNIQUE INDEX indexname ON tablename
    (attr1 ASCDESC, attr2 ASCDESC, ...)
  • Adds an index on the specified attributes to a
    table

48
System Information In ORACLE
  • Find all of the tables for a user
  • SELECT FROM ALL_CATALOG WHERE OWNER userid
  • SELECT FROM USER_CATALOG (or CAT)
  • Show the attributes and types of data for a
    particular table in SQLPlus
  • DESCRIBE tablename

49
Running commands
  • Create file with SQL and SQLPlus commands in it.
  • Use a plain text editor and NOT a word processor
    (or save as text only)
  • Give the file the extension .sql
  • From inside SQLPlus type
  • START filename

50
Simple formatting in SQLPlus
  • SET PAGESIZE 500
  • SET LINESIZE 79
  • PROMPT stuff to put out to screen
  • TTITLE title to put at top of results pages
  • COLUMN col_name HEADING New Name

51
Outputting results as a file…
  • SPOOL filename
  • Commands
  • everything that you see is copied to the file
    until…
  • SPOOL STOP
  • File will be created with everything between the
    SPOOL commands
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