In this section we are going to discuss logic & loping in PHP .
Run This Program to see Output .
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Example for Nested If.. Else .
Output of above to program is dynamic i.e changes day to day .. so run It & check this out.
Switch Statement : Use this statement to select one of many block of code to execute. An example are given there.
Now Its time For Looping .. loops in Php is same as that of C langauge .
While LOOPS : Loop execute a block of code a specified No of times, or while a specified condition is TRUE.
while(condition)
{
code to be execute ;
}
Ex.
OutPut is repeated String "welcome to Http://beginer2cs.blogspot.com for crash course of php " and no of reputation depend on condition of While loop.
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Do ..while loop. : The main difference b/w While & do..while loop is :
While loop first check condition then execute condition But Do .. while loop first execute code once than check condition . because of that it is confirm that Do ..while loop must execute atleast once .
OutPut is a repeated string you can check.
For LOOP : The loop is usedwhen you know in advance how many time the script should Run.
for( initial cond ; end cond ; increment or decrements )
{
code to be execute;
}
Output is also repeated string .
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There is another loop in PHP foreach it is used to loop through arrays ..
we will discuss this after arrays .
Next section Is all about array .
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The if....Else statements :
Similar to C program if ... else statements
condition statements are used to perform different actions based on different condition.
If statement :Use this to execute some code only if specify condition is true.
If...Else statement : Use this condition to execute some code when condition is true & another code when condition is false .
Nested if..else : used in nested case .
this is a very basic Example of If.. else statement .
<?php
//if .. else statement
$d=date("D"); // syntax to find day ;
if($d=="Sat")
echo " HAVE A NICE Weekend !";
else
echo " TODAY is : $d";
?>
Run This Program to see Output .
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Example for Nested If.. Else .
<html>
<body>
<?php
// Hierarchy of if ... else statement
$d=date("D");
if($d=="Fri")
echo " Have a nice Weekend !";
elseif($d=="Sun")
echo "Have a Nice Sunday!";
else
echo "Have a Nice day ";
?>
</body>
Output of above to program is dynamic i.e changes day to day .. so run It & check this out.
Switch Statement : Use this statement to select one of many block of code to execute. An example are given there.
<?php
// switch statement same as switch in to c language
$x=3;
switch($x)
{
case 1:
echo "Number 1";
break;
case 2:
echo "Number 2";
break;
case 3:
echo " NUmber 3";
break;
default :
echo " Please enter no. b/w 1 to 3";
}
?>
Now Its time For Looping .. loops in Php is same as that of C langauge .
While LOOPS : Loop execute a block of code a specified No of times, or while a specified condition is TRUE.
while(condition)
{
code to be execute ;
}
Ex.
<?php
//Looping While loop :
$i=0;
while($i<10)
{
echo "welcome to Http://beginer2cs.blogspot.com for crash course of php<br /><br />";
$i++; // increment operator equivalent to i=i+1
}
?>
OutPut is repeated String "welcome to Http://beginer2cs.blogspot.com for crash course of php " and no of reputation depend on condition of While loop.
Related Post : Easiest Way to Create Ad hoc Network (without any Software)
Do ..while loop. : The main difference b/w While & do..while loop is :
While loop first check condition then execute condition But Do .. while loop first execute code once than check condition . because of that it is confirm that Do ..while loop must execute atleast once .
<?php
//Looping do..While loop :
$i=0;
do
{
echo "The no is ".$i."<br /><br />";
$i++; // increment operator equivalent to i=i+1
}while($i<4)
// What is main different b/w while loop & do..while loop
?>
OutPut is a repeated string you can check.
For LOOP : The loop is usedwhen you know in advance how many time the script should Run.
for( initial cond ; end cond ; increment or decrements )
{
code to be execute;
}
<?php
//Looping for loop :
for($i=5;$i<=11;$i++)
{
echo "The no is ".$i."<br /><br />";
}
// What is main different b/w while loop & do..while loop
?>
Output is also repeated string .
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There is another loop in PHP foreach it is used to loop through arrays ..
we will discuss this after arrays .
Next section Is all about array .
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