Tutorial 21: Foreach Loop


The Foreach Loop! This loop is a very popular loop, and is used extensively in database-driven websites. The purpose of a Foreach Loop is to "loop through each key/value pair in an array" (w3schools).

The syntax looks like so:

foreach ($array as $value) {
	
	// execute code
	
}

Basically, here's what happens during each loop iteration:

  1. Assign value of current array element to $value
  2. $value is echoed on the screen
  3. The array pointer then moves to the next element within the array
  4. Repeat from beginning until final array element

Let's use a real-world example of how to use a Foreach Loop:

// We need to create an array
// Let's resurrect our array of moustaches
$moustaches = array("Handlebar", "Salvador Dali", "Fu Manchu");

// Loop through the $moustaches array
foreach ($moustaches as $moustache) {
	
	// Output each individual value
	echo "I love the $moustache 
"; }

If coded correctly, this should echo the three moustaches in the array on your screen.

Feel free to experiment with the above Foreach Loop with some PHP using the practice.php page provided in this folder.

Check out the final example
©2019 Brad Hussey