Differentiate For each and While loop.

Answer in Brief

	While loop	Foreach loop
Working principle	The while statement will execute a block of code If and as Song as a test expression, is true.	The foreach statement is used to loop through arrays.
Working principle	If the test expression is true then the code block will be executed. After the code has executed the test expression will again be evaluated and the loop will continue until the test expression is found to be false.	For each pass, the value of the current array element is assigned to $value and the array pointer is moved by one and in the next pass, the next element will be processed.
Syntax	`while(condition) { code to be executed; }`	`for each ($array as $value) { code to be executed; }`

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Looping Structure

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Chapter 7: Looping Structure - Evaluation - PART – III [Page 118]

Chapter 7 Looping Structure
Evaluation - PART – III | Q 3. | Page 118

for ($ x=0; $ x<5; x++)
echo “Hai”
The above loop executes how many no of times?

Consider the following code

<? php
$count=12;
do{
printf(“%d squared=%d<br/>”,
$count, pow($count,2));
} while($count<4);
?>

What will be the output of the code.

Define for loop in PHP.

Write Syntax of while loop in PHP.

Write Syntax of Do while loop in PHP.

Compare for loop and for each loop.

Differentiate While and Do while loops.

Discuss in detail about Foreach loop.

Explain concepts of for loop with example.

Explain working of loops in array.