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PHP | foreach Loop

The foreach construct provides the easiest way to iterate the array elements. It works on array and objects both. The foreach loop though iterates over an array of elements, the execution is simplified and finishes the loop in less time comparatively. It allocates temporary memory for index iterations which makes the overall system to redundant its performance in terms of memory allocation.

Syntax:

foreach( $array as $element ) {
    // PHP Code to be executed
}

or

foreach( $array as $key => $element) {
    // PHP Code to be executed
}

Below programs illustrate the foreach loop in PHP:

Program 1: PHP program to print the array elements using foreach loop.




<?php
  
// Declare an array
$arr = array("green", "blue", "pink", "white"); 
  
// Loop through the array elements
foreach ($arr as $element) {
    echo "$element ";
}
  
?>


Output:

green blue pink white

Program 2: PHP program to print the associative array elements using foreach loop.




<?php 
$employee = array( 
    "name" => "Robert", 
    "email" => "robert112233@mail.com", 
    "age" => 18, 
    "gender" => "male"
  
); 
  
// Loop through employee array 
foreach($employee as $key => $element) { 
    echo $key . ": " . $element . "<br>"; 
} 
  
?> 


Output:

name: Robert
email: robert112233@mail.com
age: 18
gender: male
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