SLOVE: do while loop in PHP

do while loop in PHP

The do…while Loop executes the statement once and then check the condition.
Syntax

 do
 {
  code to be executed;
   }
 while (condition);

{

code to be executed;

}

while (condition);

<?php
 
$i=1;
 
do
  
 {
   
echo "The number is " . $i . "<br>";
  
 $i++;
   
}
 
while ($i<=5);
  
?>

<?php

$i=1;

{

echo "The number is " . $i . "<br>";

$i++;

}

while ($i<=5);

Output
The number is 1
The number is 2
The number is 3
The number is 4
The number is 5

In the above example
variable $i hold value=”1″. first execute the statement inside do.
after that it check while condition($i<=5). So the given statements execute 5 times.

Write a program to display table of given number.

<?php
 
@$tab=$_GET['tab'];
 
$i=1;
 
do
  
 {
    
$t=$tab*$i;
   
echo $t." ";
      
$i++;

}
 
while ($i<=10);  
 
?>

 <body>
  
<form>
   
Enter Your table<input type="text" name="tab"><br/>
   
 <input type="submit" value="Table">
 
</form>
</body>

<?php

@$tab=$_GET['tab'];

$i=1;

{

$t=$tab*$i;

echo $t." ";

$i++;

}

while ($i<=10);

<body>

<form>

Enter Your table<input type="text" name="tab"><br/>

</form>

</body>

Output
10 20 30 40 50 60 70 80 90 100
Enter your table

In the above example
Create text-box and a button using HTML script. Logic is performed inside PHP script.
First we collect the value entered by user using $_GET. $i hold value=1.
to print the table of 10. ($t=$tab*$i) this condition multiply the entered value with $x(initial value) value is increment after every iteration.
While check ($i<=10). so the while( ) loop executes the statement 10 times. Output will generate table of 10.

Nested do – while

Write a program to display more than one table at a time.

<?php
 
$n=1;
 
$i=0;
 
$t=0;
 
 
do
   
{
    
do
  
{
    
$i++;
       
$t=$i*$n;   
    
echo $t;
     
while($i<=10)
   
}  
    
$i=0; 
    
$n++; 
   
while ($n<=10); 
   
} 
 
?>

<?php

$n=1;

$i=0;

$t=0;

{

$i++;

$t=$i*$n;

echo $t;

while($i<=10)

}

$i=0;

$n++;

while ($n<=10);

}

In the above example
we display more than one table, nested do while loop is used.
Declare three variable $n hold vale=”1″
$i hold value=”0″
$t hold value=”0″

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Friday, January 8, 2016

do while loop in PHP

do while loop in PHP

Write a program to display table of given number.

Nested do – while

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