while & do..while Loop
Posted on: February 5, 2011 at 12:00 AM
Posted on: February 5, 2011 at 12:00 AM
while & do..while Loop
while loop
The while loop iterate until provided condition is true. Given below the syntax :
while (condition)
{
code to be executed;
}
Example
<html>
<body>
<?php
$j=1;
while($j<=3)
{
echo "Value of j" . $j . "<br />";
$j++;
}
?>
</body>
</html>
Output :
Value of j 1
Value of j 2
Value of j 3
The do...while statement
The do-while loop always executes its block of code at least once. Given below the syntax :
do
{
code to be executed;
}
while (condition);
First it executes code and then checks the condition. It it is true, then loop iterate through further. Given below the example :
Example :
<html>
<body>
<?php
$j=1;
do
{
$j++;
echo "Value of j" . $j . "<br />";
}
while ($j<=3);
?>
</body>
</html>
Output :
Value of j 2
Value of j 3
Value of j 4
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