The foreach Loop PHP Array

The foreach loop is used to iterate through all elements of an array.

Let's say we have the following array:

<?php
	$arr = [1, 2, 3, 4, 5];
?>

Let's output its elements to the screen:

<?php
	$arr = [1, 2, 3, 4, 5];
	foreach ($arr as $elem) {
		echo $elem;
	}
?>

Code execution result:

12345

Associative Array

You can also iterate and output all elements of an associative array.

Let's say we have the following array:

<?php
	$arr = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'c' => 5];
?>

Let's output its keys and elements to the screen:

<?php
	$arr = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5];
	
	foreach ($arr as $key => $elem) {
		echo $key . ' - ' . $elem . '<br>';
	}
?>