Basic PHP Tutorial

Basic PHP Tutorial

www.m51a.com

What is PHP?

Rasmus Lerdorf (born November 22, 1968, in Qeqertarsuaq, Greenland

၈ ၇ ၉၉၅

။

အ

အ

အ

။

၉၉၈

Andi Gutmans

အ

Zeev Suraski

အ အ

။

အ

။

Hyper

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။

PH

အ

အ

Dynamic & Interactiv

PHP

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။ Server Sit

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။

အ

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အ

အ

။

အ

အ

Informix, Oracle, Sybase, Solid, PostgreSQL, Generic, ODBC, etc …

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။

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အ

။ အ

။

- MySQL,

။

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။ အ

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Wordpress,

။

Where to Start?

LAMP (Linux Apache MySQL PHP)၊ WAMP (Window

Apache MySQL PHP)၊ XAMPP (X (meaning cross-platform) Apache MySQL PHP Preal) အ

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။

WAMP Server Installation

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.

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P

PHP

Tag (၄)

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T

။၄

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-

T

T

<?php

?>

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<?php

?>

၂။

T

T

<?

?>

<?

?> အ

။

၃။

T

T

<%

%>

အ

။

<%

%>

၄။

T

T

<script language=”PHP“>

</script>

<script language=”php”>

</script>

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Output text with PHP

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semicolon (;

။

-

<?php

echo “Hello, Friend”;

print “Hello, World”;

?>

echo

။

Syntax ျဖစ္သည့္အတြက္ေၾကာင့္ ျဖစ္ပါသည္။

print

။

<?php

echo “ Hello Friend, “ Nice To Meet U “” ;

?>

T

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”အ

။အ

“ အ

“ ”

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“”

-

<?php

echo „ Hello Friend, “Nice To Meet U”‟ ;

?>

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“” အ

„‟

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-

<?php

echo “Hello Friend, \“ Nice To Meet U\ “” ;

echo „ I\‟m Just ducky. ‟;

?>

။

Comments in PHP

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၊

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၂

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။ Single Line Comments

၂။ Multi Line Comments

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၂

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။ Unix/Linux shell-Style(Prel style) Comments

Unix/Linux shell-Sty

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<?php

# Output “Hello Friend” (this is single line comment)

echo “Hello, Friend”;

?>

၂။ C++ Style Comments

C++ Style Comments

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<?php

// Output “Hello Friend” (this is single line comment)

echo “Hello, Friend”;

?>

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။

၂ ။ C Style Comments

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<?php

/* Output “Hello Friend” (this is Multi line comment) */

echo “Hello, Friend”;

?>

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Variables in PHP

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-

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PHP Variable Types

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။ Integers: Are whole numbers, without a decimal point, like 4195

၂။ Doubles: Are floating-point numbers, like 3.14159 or.49.1

၃။ Booleans: have only two possible values either true or false

၄။ NULL: Special Data Type (An uninitialized variable)

၅။ Strings: („‟, ””, here documents (allows strings are multiple lines))

၆။ Arrays: similar to dictionaries in Python and hashes in Perl

(It provides key/value Pairs)

၇။ Objects: are instances of programmer-defined classes, which can package up both other kinds of values

and functions that are specific to the class.

၈။ Resources: Special Data Type (Reference to a third party resource)

အ

<?php

$txt=”Welcome to M51A”;

echo $txt;

?>

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-

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Va

။အ

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( . ) Operator

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-

<?php

$a="I Love Mistake";

$b="U are Welcome";

echo $a.$b;

?>

။

။

-

<?php

$first_name= „Mistake‟;

$second_name= 51;

$last_name= „Area‟;

echo $first_name, “\t”, $second_name, “\t”, $last_name;

?>

။

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။

အ

vari

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<?php

$first_name= „Mistake‟;

$second_name= 51;

$last_name= „Area‟;

echo $first_name, „\t‟, $second_name, „\t‟, $last_name;

?>

။

PHP Script

။

Answer: 5 + 4 = 9

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<?php

။

အ

၅

၄

၉

$a = 5;

$b = 4;

$c = 9;

echo 'Answer:',"\t", $a,'+', $b,' =',"\t",$c;

?>

။

<?php

$a = 10000;

$b = 99999.99;

echo ($a+$b);

?>

အ

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၂

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()

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Arithmatic Operators

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-

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--

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Comparison Operators

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(

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၂

၂

Programming Looping in PHP

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။အ

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repeat

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၄

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။ While Loops

၂။ Do While Loops

၃။ For Loops

၄။ Foreach Loops

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။ While Loops

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while ( expression )

{

// Code to execute

}

-

<?php

$online = 1;

while ( $online <= 12 )

{

echo "$online x 2 = ".($online*2)."<br />";

။

$online++;

}?>

အ

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အ

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။အ

၂

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၂

အ

$counter = 1;

while ($counter < 11)

{

echo ("counter =".$counter."<br>");

၂

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<?php

အ

-

$counter++;

}

?>

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T

<br>

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၂။ Do While Loop

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{

// code to be executed

}

while (condition);

-

<?php

$upperlimit = 10;

$lowerlimit = 1;

do

{

echo ($upperlimit * $lowerlimit) . '&nbsp;';

$lowerlimit++;

}

while ($lowerlimit <= $upperlimit);

?>

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Space

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T

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<?php

$counter = 1;

do

{

echo "The number is: $counter <br />\n";

$counter ++;

upperli

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}

while ( $counter > 500 && $counter < 1000 );

?>

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cond

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၉၉၉

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T

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၅

၅ ၂

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၅ ၃

။အ

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၉၉၉

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For Lo

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for ( initialization ; condition; increment)

{

// code to be executed

}

-

<?php

for ($number = 1; $number <= 12; $number++)

{

echo "Welcome to M51A!<br />";

}

?>

၄။

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foreach (array _variable as value)

{

//code to be executed

}

foreach (array _variable as $key => $value)

{

အ

။

အ

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//code to be executed

}

၂

။

<?php

$test=array(1,2,3,4,5,6,7,8,9,10);

foreach ($test as $value)

{

echo "$value - ";

}

?>

။

1-2-3-4-5-6-7-8-9-10

-

<?php

“one”, “two”, “three”);

foreach ($test as $key => $value)

{

echo "$key - $value <br> ";

}

?>

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0-1

0-2

0-3

Arrays

T

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T

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Special Conta

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T

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၂။

T

T

၃

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၃။

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-

$friends = array(“Ye Gyi”,”ShweMoe”,”Moelone”);

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$name [0] = “Ye Gyi”

$name [1] = “ShweMoe”

$name [2] = “Moelone”

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၂။

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$student_score = array (“Tarnge” =>80, “ShweMoe”=>90, “Moelone”=>85);

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$student_score [“Tarnge”] = 80;

$student_score [“ShweMoe”] = 90;

$student_score [“Moelone”] = 85;

T

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၃။

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<?php

$array1 = array (10,15,20);

$array2 = array (110,115,120);

$array3 = array (210,215,320);

$big_array = array ($array1, $array2, $array3);

echo $big_array [1] [2];

?>

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Arr

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။အ

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၃

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Switching Flow

PHP Conditional Statements

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If Statement

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if (expression)

{

/*code to execute if the statement is true*/

}

-

<?php

$user = "Tin HTun Lwin";

အ

။

State

if ($user == " Tin Htun Lwin ")

{

echo "M51A creator is Tin Htun Lwin ";

}

?>

အ

။အ

Lwin ("Tin Ht

($user == " Tin Ht

။

Tin Htu

၊

T

echo (echo "M51A

creator is Tin Ht

။ အ

M51A Creato

T

။

If...Else Statement

အ

အ

If …

Tin Htun

အ

if …

။

အ

။

။

if (expression)

{

/*code to execute if the statement is true*/

}

else

{

/*code to execute if the statement is false*/

}

-

<?php

$user = "Tarnge";

if ($user == " Tin HTun Lwin ")

{

echo "M51A creator is Tin HTun Lwin ";

}

else

{

echo “M51A Admin is Tarnge”

}?>

အ

။အ

T

" Tin Ht

။

၊

T

T

Ht

T

($user ==

echo (echo "M51A creator is Tin

echo (echo “M51A Admin is Tarnge”

။အ

T

T

။

If…Else If Statement

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အ

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If …

။

if(expression1)

{

/*code to execute if the statement is true*/

}

else if(expression2)

{

/*code to execute if the previous statement is false and this statement is true*/

}

else

{

/*code to execute none of the above statements are false*/

}

-

<?php

$user = "Moe Lone";

if

($user == "Tin Htun Lwin")

{

echo "M51A creator is Tin Htun Lwin";

}

else if

($user == " Tarnge ")

{

echo "M51A Admin is Tarnge";

}

else if

($user == "Moe Lone")

{

echo " M51A Admin is Moe Lone ";

}

else

{

echo "You Are M51A Member";

}?>

Switch Statement

။ အ

အ

။

switch (expression )

{

case label1:

// code to be executed if expression = label1;

break;

case label2:

// code to be executed if expression = label2;

default:

Co

။

။

break;

အ

အ

// code to be executed

// if expression is different

// from both label1 and label2;

}

-

<?php

$m51a = "Tin Htun Lwin";

switch ($m51a)

{

case "Creator":

case "Administrator":

echo " You Are M51A Website Administrator ";

break;

case "Moderator":

case "Supervisor":

echo " You Are M51A Administrator Group Member";

break;

case "Special Member ":

case " Member ":

echo "Hello Friend, You Are Welcome To M51A ";

break;

default:

echo "Thanks for visiting! Please either login below, or click here to register";

}?>

။အ

("Tin Ht

။ အ

Tin Htun Lwin

။

။

You

အ

Are M51A

Administrator

Gro

အ

။

အ

အ

T

အ

အ

T

။

Function In PHP

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။

အ

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_

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Function MyTest()

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{ အ

{ အ

အ

}အ

။

အ

} အ

။

-

<?php

function Greeting()

{

echo "Hello Friend, You Are Welcome To M51A<br/>";

}

?>

အ

အ

အ

{}

။

()

။

။

။

အ

အ

။

<?php

function Greeting()

{

echo "Hello Friend, You Are Welcome To M51A<br/>";

}

Greeting();

?>

။

<?php

။

။

functionGreeting()

{

echo "Welcome To Mistake 51 Area!<br/>";

}

echo "Hello Friend <br/>";

Greeting();

echo "Hello New Member <br/>";

Greeting();

?>

Parameters

အ

အ

-

။

။

။

<?php

function Greeting($Name)

{

echo "Hello! " . $Name . "<br/>";

}

Greeting("Tarnge");

Greeting("Ye` Paing Phyo");

Greeting("Moe Lone");

Greeting("Shwe Moe Hlaing");

?>

အ

အ

အ

အ

$N

။

Hello!

အ

.

("

.

$Name

.

")

။

။

အ

အ

“”

။

အ

။

Hello! Tarnge

Hello! Ye` Paing Phyo

Hello! Moe Lone

Hello! Shwe Moe Hlaing

,

<?php

function Greeting($Name, $Posting)

{

။ အ

။

echo "Hello! " . $Name . " " . $Posting . "<br/>";

}

Greeting("Tarnge,", "You Are M51A Administrator");

Greeting("Ye` Paing Phyo,", "You Are M51A Administrator");

Greeting("Moe Lone,", "You Are M51A Moderator");

Greeting("Shwe Moe Hlaing,", "You Are M51A Supervisor");

?>

အ

။

Hello! Tarnge, You Are M51A Administrator

Hello! Ye` Paing Phyo, You Are M51A Administrator

Hello! Moe Lone, You Are M51A Moderator

Hello! Shwe Moe Hlaing, You Are M51A Supervisor

။

PHP Functions - Returning Values

အ

-

<?php

function plus($x, $y)

{

$total = $x * $y;

return $total;

}

plus(3, 17);

echo "M51A =" . plus(3, 17);

?>

(Return Valu

အ

အ

။

အ

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၂

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။

၂

။

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။

M51A =51

PHP Forms and User Input (Post Method& Get Method)

T

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။ အ

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T

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POST Method

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<html>

အ

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။

အ

T

<body>

<form action="welcome.php" method="post">

Name: <input type="text" name="name" />

Age: <input type="text" name="age" />

<input type="submit" />

</form>

</body>

</html>

အ

။

Fi

။ အ

အ

အ

။

။

The $_Request Variable

အ

အ

အ

အ

အ

<html>

<body>

Welcome

<?php

echo $_POST["name"];

?><br />

You are

<?php

echo $_POST["age"];

။

။

အ

အ

?>

years old.

</body>

</html>

T

။

အ

welcome.p

။

T

အ

။

Get Method

အ

၇

။

Get

အ

။

။

အ

။

-

<html>

<body>

<form action="welcome.php" method="get">

Name: <input type="text" name="name" />

Age: <input type="text" name="age" />

<input type="submit" />

</form>

</body>

</html>

။

။

။

S

Date …. Time Function

T

အ

အ

။

။

<?php

echo date("d/m/y");

?>

။

m-d-y အ

Supplying a Timestamp

Ti

။

mktime(hour, minute, second, month, day, year, daylight savings time)

-

<?php

- 16/11/10

။

$tomorrow = mktime(0, 0, 0, date("m"), date("d")+1, date("y"));

echo "Tomorrow is ".date("m/d/y", $tomorrow);

?>

အ

။

T

အ

အ

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Include & Require

Include () Function

အ

အ

အ

အ

။

အ

အ

အ

။

။

အ

အ

အ

အ

။

-

အ

အ

။

<a href="http://www.m51a.com/index.php">Home</a>

<a href="http://www.m51a.com/ tutorials.php?">Tutorials</a>

<a href="http://www.m51a.com/ knowledge.php">Knowledge</a>

အ

အ

။

။ အ

အ

။

<html>

<body>

<?php include("menu.php"); ?>

<h1>Welcome to Mistake 51 Area!</h1>

<p>Some text.</p>

</body>

</html>

။

။

Require () Function

Include

အ

အ

အ

အ

။

။

အ

၂

။

Bro

အ

အ

။

Welcome to

အ

အ

အ

။

Warning: include(menu.php) [function.include]: failed to open stream: No such file or directory in

C:\wamp\www\Testttttttttttttt\index.php on line 3

Warning: include() [function.include]: Failed opening 'menu.php' for inclusion (include_path='.;C:\php5\pear') in

C:\wamp\www\Testttttttttttttt\index.php on line 3

Welcome to Mistake 51 Area!

Some text.

အ

include("menu.php")

အ

အ

<?php

။

အ

-

Warning: require(menu.php) [function.require]: failed to open stream: No such file or directory in

C:\wamp\www\Testttttttttttttt\index.php on line 3

Fatal error: require() [function.require]: Failed opening required 'menu.php' (include_path='.;C:\php5\pear') in

C:\wamp\www\Testttttttttttttt\index.php on line 3

အ

။

။

PHP File Handling

၊

၊

၊

၊

T

၊

၊

၊

၊

။

File Create / File Open

၊

၊

။

အ

။

-

<html><body>

<?php

$file=fopen("welcome.txt","w");

?>

</body></html>

အ

အ

။

အ

“r”

အ

အ

("w"

။ “r”

။

။ အ

အ

အ

err

။ အ

အ

အ

။အ

အ

။

Read: 'r'

အ

။

Read/Write: 'r+'

၊

၂

။

Write: 'w'

အ

။

အ

။

အ

အ

Write/Read: 'w+'

၊

၂

အ

။

အ

။

Append: 'a'

အ

အ

အ

။

Append: 'a+'

၊

၂

။

အ

။

Append: 'x'

အ

အ

။

Append: 'x+'

အ

အ

။

အ

။

File Close

။

အ

အ

။

<?php

$file = fopen("test.txt","r");

fclose($file);

?>

PHP Cookies

T

အ

အ

။

။

Cookie

T

။

အ

၊

အ

အ

။ အ

TT

အ

အ

TT

။

အ

အ

အ

အ

။

အ

။

How to create a cookie?

။

။

Setcookie (name, value, expire, path, domain);

အ

<?php

setcookie("user", "m51a");

?>

။

<html>

အ

အ

။

အ

။

အ

<?php

setcookie("user", "m51a", time()+3600);

?>

<html>

<?php

$expire=to,e()+60*60*24*30;

setcookie("user", "m51a", $expire);

?>

။

<html>

အ

။

အ

။

။

How to Retrieve a Cookie Value?

။

cook

<?php

// Print a cookie

echo $_COOKIE["user"];

// A way to view all cookies

print_r($_COOKIE);

။

အ

?>

Register u

။

<html>

<body>

<?php if (isset($_COOKIE["user"]))

echo "Welcome " . $_COOKIE["user"] . "!<br />";

else

echo "Welcome guest!<br />";

?>

</body>

</html>

How to Delete a Cookie?

။

၊

အ

။

<?php

// set the expiration date to one hour ago

setcookie("user", "", time()-3600);

?>

T

။

PHP Sessions

။

အ

၊

အ

အ

အ

အ

အ

။

အ

အ

အ

အ

အ

အ

။

။

။

။

။

အ

အ

အ

။

-

အ အ

။

Starting PHP Session

။

။

<?php session_start(); ?>

<html>

Storing a Session variable

။

<?php

session_start();

// store session data

$_SESSION['views']=1;

?>

<html>

<body>

<?php

//retrieve session data

echo "Pageviews=". $_SESSION['views'];

?>

</body>

</html>

Pageviews=

။

။အ

။

။

။

၊

။

<?php

session_start();

if(isset($_SESSION['views']))

$_SESSION['views']=$_SESSION['views']+1;

else

$_SESSION['views']=1;

echo "Views=". $_SESSION['views'];

?>

Destroing a Session

။

အ

<?php

unset($_SESSION['views']);

အ

။

?>

session_destroy()

။

<?php session_destroy(); ?>

www.m51a.com

PHP:Basic

PHP

Tutorial

။

Tin Htun Lwin (mistake51area@gmail.com)

E-B

အ