PHP Foreach Loop

Foreach Loop in PHP

The foreach Loop is used to display the value of array.

You can define two parameter inside foreach separated through "as" keyword. First parameter must be existing array name which elements or key you want to display.

At the Position of 2nd parameter, could define two variable: One for key(index) and another for value.

if you define only one variable at the position of 2nd parameter it contain arrays value (By default display array value).

Syntax

	foreach ($array as $value)
  	{
	code to be executed;
  	}

For every loop iteration, the value of the current array element is assigned to $value (and the array pointer is moved by one) - so on the next loop iteration, you'll be looking at the next array value.

The following example demonstrates a loop that will print the values of the given array.

<?php
	
$person=array("alex", "simon","ravi");
	
foreach ($person as $val)
  	
{
	 
echo $val."<br/>";
  	
} 
 
?>

Output
alex
simon
ravi

In the above example,
declare an array variable($person) hold the elements of array. Here we want to print all element of an array without passing index value.
We used foreach( ) loop. Passing Variable name ($person as $val).
it means $val collect all elements of an array. Pass $val with echo statement it show all element as output.

Define colors name and their index

<?php
	
$color=array("r"=>"red", "g"=>"green","b"=>"black","w"=>"white");
	
foreach ($color as $key=>$val)
  	
{
	 
echo $key."--".$val."<br/>";
  	
} 

?>

Output
r--red
g--green
b--black
w--white

In the above example,
$color variable hold the values ("red","green","black","white") on index("r", "g", "b", "w" ).
if we want do display all values with their index then used foreach( ) loop.
Inside foreach( ) we have passed three arguments array name, index($key) and value($val) separated by "as".
Now call the variable $val to display array values and $key for index.

Find the Sum of given array

 <?php
	
$array=array(10,11,12,13,14,15);
	
$sum=0;
      
 foreach ($array as $x)
  	
{
       
 $sum=$sum+$x;
  	
} 
      
 echo "Sum of given array = ".$sum;

?>

Output
Sum of given array = 75

In the above example,
Declare variable $array hold the elements of an array, variable $sum hold value=0,
pass( $array as $x) inside foreach( ) loop.
It call the values of array one by one and make sum ($sum=$sum+$x) till ends of array.
at last pass $sum with echo statement to display the sum of given array, output will become.

« Previous Next »

PHP Tutorial PHP Introduction For Beginners PHP Advantage PHP Software Requirement PHP WAMP Installation PHP XAMPP Installation PHP Syntax PHP Comments PHP Variables PHP $ and $$ Variables PHP Super global variables How to swap two numbers in PHP PHP Constant PHP:Magic Constant echo and print in PHP PHP Data Types PHP Form GET Method POST Method Form action PHP Display result in Textbox Multiple submit buttons php different actions Add two textbox values and display the result in third textbox PHP Operators PHP Arithmetic Operators PHP Assignment Operators PHP Comparative Operators PHP Logical Operators PHP Operators Precedence PHP Conditional Statement PHP if Statement PHP if-else Statement PHP if elseif else Statement PHP Switch Statement PHP calculator Profit and Loss What is Loop PHP For Loop Print star pattern in PHP Create table using for loop in PHP PHP While Loop PHP Do While Loop PHP Foreach Loop PHP String PHP Numeric Functions PHP Tutorial PDF For Beginners PHP isset function

PHP Interview Question

PHP Projects

PHP String Functions

PHP Math/Number Functions

No Sidebar ads