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.



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