PHPMySQL_CH01

7/25/2019 PHPMySQL_CH01

1/25

LEARN THE QUICK AND EASY WAY!

VISUAL QUICKPROGUIDE

PHP and MySQL for

Dynamic Web Sites 4th Edition

Instructors NotesChapter 1: Introduction to PHP

Copyright 2012 by Larry Ullan


2/25



Leanin O"t#o$e%

! Create a basic PHP script

! "#ecute a PHP script

! $end data to the %eb bro&ser! %rite coents in PHP

! 'eonstrate ho& to use (ariables

! %or) &ith string (ariables* including concatenation and

a +e& string +unctions


3/25



Leanin O"t#o$e%

! %or) &ith nueric (ariables* including arithetic and+oratting

! %or) &ith constants

! ,no& ho& PHP treats the t&o -uotation ar) typesdi++erently

! .ecogni/e coon escape se-uences

! Ipleent soe basic debugging techni-ues


4/25



&a%i# PHP S#i't


5/25



R"nnin a PHP S#i't

! ust ha(e a PHPenabled %eb ser(er e3g3* 4pache5

! Place the PHP script in the %eb directory

! 4ccess the +ile in your bro&ser through a U.Lhttp65


6/25



Sendin Data to the

&o(%e4h# 9Hll#: '#rl+!95

4h# "What9 ';"5

%rt 9Hll#: '#rl+!95

%rt "What9 ';"5


7/25LEARN THE QUICK AND EASY WAY!


Sendin Data to the

&o(%e




Sendin HT)Lto the

&o(%e




E%#a'in Chaa#te%

4h# "h a+: "H#' ar #;""5 // Err#r!

4h# 9I9m =t +4>.95 // Err#r!

4h# 9h a+: "H#' ar #;"954h# "I9m =t +4>."5

4h# "h a+: ?"H#' ar #;?""5

%rt 9I?9m =t +4>.95




Pa%e Eo%




Witin Co$$ent%




Vaia*+e T,'e%

! 7oolean

! Integer

! 8loating point! $tring

! 4rray

! 9bects

! .esources! Null




Vaia*+e Na$e%

! $tart &ith a ;

! Contain only letters* nubers* and the underscore

!




Pintin Vaia*+e%

%rt #m2ar5

%rt "Hll#: am"5

%rt 9Hll#: am95 // W#9t '#r>!




Stin Va+"e%

! >

! ?In &aterelon sugar?

! >100>! >4ugust 2* 2011>




Ceatin and U%in Stin%

6rtam 9T#8a95

t#+a 9A(t : 01195

2ar "D6 ?"%latt+?": %la."5

2ar 9D6 "%latt+": %la.95

4h# 6rtam5

4h# "Hll#: 6rtam"5




Pe-o$in Con#atenation

4t 9attl95

tat 9Wah(t#95

a++r 4t . 9: 9 . tat5

// Or&

4t 9attl95

tat 9Wah(t#95

a++r 4t5

a++r . 9: 95

a++r . tat5




N"$ei# Va+"e%

! @

! A31B

! 10@2ABD! B32D0B@

! B3Be2

VISUAL QUICKPRO GUIDE




Ceatin and U%in

N"$*e% 3.1F5

r#+ G5 // 3

3.1F7J5 r#+ G: 35 // 3.1F3

0F35

m8r6#rmat G5 // 0:F3

0F35 m8r6#rmat G: 5 // 0:F3.00





Aith$eti# O'eato%

Operator Meaning

E 4ddition

$ubtraction

F ultiplication

G 'i(ision

odulus

EE Increent

'ecreent





Pe-o$in Aith$eti#




Ceatin and U%in

Con%tant%+6 G9$AME9: 2al5

+6 G9UE)$AME9: 9tr#t#4t95

+6 G9PI9: 3.1F5

4h# "Hll#: UE)$AME"5 // W#9t '#r>!

4h# 9Hll#: 9 . UE)$AME5



23/25



Q"otation )a.%

2ar 9tt95

4h# "2ar al t# 2ar"5

4h# 92ar al t# 2ar95

4h# "?2ar al t# 2ar"54h# 9?2ar al t# 2ar9



24/25



E%#a'e Se/"en#e%

Code Meaning

? 'ouble -uotation ar)

> $ingle -uotation ar)

7ac)slash

n Ne&line

r Carriage return

t


25/25


&a%i# De*"in

! 4l&ays run PHP scripts through a U.L

! ,no& the (ersion o+ PHP youre using

! "nable displayJerrors! Chec) the H

PHPMySQL_CH01

Documents

Transcript of PHPMySQL_CH01