PHP stands for HYPERTEXT PREPROCESSOR
Preparing Environment to Run PHP program in your PC.
for Windows user Download XAMPP
& follow this Video for setup : Watch this video In HD
Start with Very First PRogram "HELLO WORLD"
A variable in PHP starts with a $ sign
echo is funtion to print just like printf in C
Related Post : Easiest Way to Create Ad hoc Network (without any Software)
I suggest you to type it in your notepad save & Run for better perception .
How to find length of string similar to C . PHP also have a function name strlen() .
Now See this example program .
Here $text is a variable assign to string "hello World" . then we pass this variable to function strlen() which return length of string.
Now strpos() : fun used to search for character or world within a string it takes two arguments first is string in which search has to perform And second is what we have to search.
output returns the position of first occurrence of searched element . If not found then return FALSE
Related Post : How to host your website for FREE (google drive )
we will show you example of this in next section .....
In next section we will talk about logic in php & looping in php
PHP crash course -2
PHP crash course -3
Short Introduction to PHP
- php IS A SERVER scripting language like ASP
- php script are executed on server
- It support many databases like MYSQL, Informix, Oracle, Sybase, Solid, ODBC etc..
- php is an open source software
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Why PHP
- PHP runs on different platform (windows,Linux,UNIX,etc)
- compatible with almost all servers used in Nowdays
- FREE available
- easy to learn
Preparing Environment to Run PHP program in your PC.
for Windows user Download XAMPP
& follow this Video for setup : Watch this video In HD
Start with Very First PRogram "HELLO WORLD"
A variable in PHP starts with a $ sign
echo is funtion to print just like printf in C
<?php
//simple question
$text="Hello World"; // test is a variable
echo "http://beginer2cs.blogspot.com: ".$text;
?>
Related Post : Easiest Way to Create Ad hoc Network (without any Software)
I suggest you to type it in your notepad save & Run for better perception .
How to find length of string similar to C . PHP also have a function name strlen() .
Now See this example program .
<?php
// length of string
$text="hello World";
echo "length of string is ".strlen($text)." & string is ".$text;
?>
Here $text is a variable assign to string "hello World" . then we pass this variable to function strlen() which return length of string.
Now strpos() : fun used to search for character or world within a string it takes two arguments first is string in which search has to perform And second is what we have to search.
<?php
// strpos() : fun used to search for character or world within a string
$text = "welcome to World of PHP";
$find="of";
echo " String is : ".$text."\n Search position of {\"of \"}is =".strpos($text,$find);
?>
output returns the position of first occurrence of searched element . If not found then return FALSE
PHP OPERATOR
It is same as C programming or any other programming language .
- +
- -
- *
- /
- %
- ++
- --
- Basic Example of using Operator
<?php
// Operators in PHP +,-,*,/,%,++,--
$x=1;
$y=2;
$z=$x+$y;
echo "x=$x & y=$y ";
echo "z=x+y : z=$z : addition";
//similarly try other operator
?>
similarly try other operator
Assignment Operator
<?php
// Operators in PHP +,-,*,/,%,++,--
$x=1;
$y=2;
$z=$x+$y;
echo "x=$x & y=$y ";
echo "z=x+y : z=$z : addition";
//similarly try other operator
?>
It is also same as Used in C programming Language Or any other language
OPERATOR
|
Example
|
Is THE same As
|
=
|
X=Y
|
X=Y
|
+=
|
X+=Y
|
X=X+Y
|
-=
|
X-=Y
|
X=X-Y
|
*=
|
X*=Y
|
X=X*Y
|
/=
|
X/=Y
|
X=X/Y
|
.=
|
X.=Y
|
X=X.Y
|
%=
|
X%=Y
|
X=X%Y
|
<?php
//Assignment Operator
$x=1; //equality operator
$y=5;
$x+=$y; // x=x+y
echo "x = $x";
// <br /> for line break
echo "<br /> You can similarly tast other Operators ";
?>
Comparison Operators :
Also similar to other language like C
OPERATOR
|
DESCRIPTION
|
eXAMPLE
|
==
|
Is equal to
|
5==8 return false
|
!=
|
Is Not
Equal to
|
5!=8 return True
|
<>
|
Is Not
Equal to
|
5<>8 returns false
|
>
|
Is greater
than
|
5>8
returns FALSE
|
<
|
Is less
than
|
5<8
returns TRUE
|
>=
|
Is greater
than or equal to
|
5>=8
return false
|
<=
|
Is less
than or equal to
|
5<=8
returns false
|
Related Post : How to host your website for FREE (google drive )
LOGICAL OPERATOR
operator
|
description
|
Example
|
&&
|
And
|
X=6,
y=3
(x<10
&& y>1) return True
|
||
|
Or
|
X=6
, y=3
(x==5||y==5)
return True
|
!
|
Not
|
X=6,
y=3
!(x==y)
return True
|
we will show you example of this in next section .....
In next section we will talk about logic in php & looping in php
PHP crash course -2
PHP crash course -3
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