017-adding-examples-for-loops.php

Author: antonio-phpfullstack

017-adding-examples-for-loops.php

@@ -0,0 +1,30 @@
+<?php
+
+for($i = 0; $i < 10; $i++) {
+    echo $i . "\n";
+}
+
+$fruits = ["apple", "banana", "orange"];
+for($i = 0; $i < count($fruits); $i++) {
+    echo $fruits[$i] . "\n";
+}
+
+$myArray = [
+    "fruits" => ["apple", "banana", "orange"],
+    "vegetables" => ["carrot", "potato", "onion"],
+    "meat" => ["beef", "pork", "chicken"],
+    "dairy" => ["milk", "yogurt", "cheese"],
+    "drinks" => ["water", "tea", "coffee"],
+    "food" => ["pizza", "burger", "salad"],
+    "sports" => ["tennis", "soccer", "basketball"]
+];
+// Using a for loop with a pre-calculated array length to iterate through the array.
+// // This approach stores the array length in a variable ($iMax) to avoid recalculating it on each iteration, improving performance.
+$keys = array_keys($myArray);
+for($i = 0, $iMax = count($myArray); $i < $iMax; $i++) {
+    echo $keys[$i] . " => ";
+    for($j = 0, $jMax = count($myArray[$keys[$i]]); $j < $jMax; $j++) {
+        echo $myArray[$keys[$i]][$j] . ", ";
+    }
+    echo "\n";
+}