PHP For Loops

When you know how many times to repeat something, the for loop is a good fit. The foreach loop is made for going through arrays.

The for loop

It has three parts: start, condition, and step.

<?php
for ($i = 1; $i <= 5; $i++) {
    echo $i . " ";
}
// Output: 1 2 3 4 5

• $i = 1 runs once at the start.
• $i <= 5 is checked before each iteration.
• $i++ runs after each iteration.

Counting down

<?php
for ($i = 3; $i >= 1; $i--) {
    echo $i . " ";
}
// Output: 3 2 1

The foreach loop

foreach walks through every element of an array.

<?php
$colors = ["red", "green", "blue"];
foreach ($colors as $color) {
    echo $color . " ";
}
// Output: red green blue

foreach with keys

You can also access the key of each element.

<?php
$colors = ["red", "green", "blue"];
foreach ($colors as $index => $color) {
    echo "$index: $color ";
}
// Output: 0: red 1: green 2: blue