Created initial site setup with hugo

content/08-loops.md

@@ -0,0 +1,69 @@
+A loop tells PHP to run a block of code more than once.
+A classic loop is a while loop.
+A `while` loop will continue to run the block of code as long as the value in parentheses is true.
+```php
+<?php
+
+$num = 5;
+while ($num > 0) {
+    echo "While loop $num\n";
+    --$num;
+}
+```
+
+A `do while` loop is similar to a `while` loop except it always runs at least
+one iteration. In a classic `while` loop, no iterations may be executed if
+the value in parentheses is false. In a `do while`, the boolean check
+is not done until after the execution of an iteration.
+```php
+$num = 0;
+do {
+    echo "Do while $num\n";
+    ++$num;
+} while ($num < 5);
+```
+
+`for` loops allow you to create a more concise while loop.
+Inside the parentheses, the left section creates a variable before the loop
+starts, the middle section is the check that is done at the beginning of each loop
+and the third section is executed after each loop.
+```php
+for ($i = 0; $i < 10; $i++) {
+    echo "For loop $i\n";
+}
+```
+
+A `foreach` loop allows you to easily loop over an array.
+An array is a list of data stored together.
+The `as` keyword lets you assign a variable to the value
+in the array for the current iteration of the loop.
+```php
+$set = [1, 2, 3, 4, 5];
+foreach ($set as $num) {
+    echo "Array value $num\n";
+}
+```
+
+In loops, you can use the keyword `break` to stop the loop execution
+no matter how many more iterations should run.
+```php
+$values = ['one', 'two', 'three'];
+foreach ($values as $value) {
+    if ($value === 'two') {
+        break;
+    }
+    echo "Break $value\n";
+}
+```
+
+The `continue` keyword stops executing the current loop iteration,
+but then allows the loop to continue with other iterations.
+```php
+$values = ['one', 'skip', 'three'];
+foreach ($values as $value) {
+    if ($value === 'skip') {
+        continue;
+    }
+    echo "Continue $value\n";
+}
+```