PHP foreach Loop

PHP foreach Loop with Example PHP foreach loop is used to loop through the associative arrays. Syntax:

foreach($array as $key => $value)
{
//Statement
}

• $array = associative array.
• $key = array key.
• &value = array key`s value.

$key and $value variables can be named anything. The $key will be equal to the array`s key, and $value will be equal to that key`s value. The loop ends when the last array key (=>) value pair reached. Associative Array Example:

$arrayname = array(‘key’ =>value, ‘key’ =>value);

Associative array have named keys. The key names are placed inside single or double quotes and the (=>) is used to assign key value pairs.

<?php
 $students = array('Henry' => 21, 'George' => 19, 'Jonny' => 15);
foreach ($students as $name => $age) {
echo $name.' '.$age.'<br/>';
 }

Output:

Henry 21
George 19
Jonny 15

• In the above program, we are using an associative array here $students with three keys/values, and we are printing the value of each array element through a foreach loop and an echo function for printing results.

Example2:

<?php
$fruits= array("Mango","Orange","Strawberry");
foreach($fruits as $t)
{
echo $t."<br>";
}
?>

Output:

Mango
Orange
Strawberry

• In the above program, an array of$fruits contains three elements. For each loop iteration, here the value of current array element is assigning to the variable $t, an array pointer is moving by one and displaying the value of each array element until the last array element found.

Example3:

<?php
function sub()
 {
$s=array("PHP","JAVA","C","R");
foreach ($s as $a)
 {
echo $a."<br>";
}
 }         
sub();
?>

Output:

PHP
JAVA
C
R

• In the above program, we are using a user-defined function sub, and the function body is containing an array $s with four elements, and we are displaying the value of each array element using a foreach loop.

Example4:

<?php
function fruit($f)
{
foreach($f as $s)
{
echo $s."<br>";
}
}
$f1=array("Apple","Cherry");
fruit($f1); //calling function by passing array
?>

Output:

Apple
Cherry

• In the above, program is containing a user-defined function fruit, and an array is passing as an argument to the function. The function is containing a foreach loop, through this loop we are displaying the value of each array element with an echo statement. When a function is called, then the function body will be executed.