028-Using array functions (reset, end, array_filter, array_map)

Author: antonio-phpfullstack

028-arrays-reset-end-array_filter-array_map.php

@@ -0,0 +1,40 @@
+<?php
+function arrayOutput($nameArray, $array):void {
+    echo "{$nameArray} = [\n";
+    foreach ($array as $key => $value) {
+        echo "\t{$key} => {$value},\n";
+    }
+    echo "]\n";
+}
+
+$fruits = [
+    'One' => 'apple',
+    'Two' => 'banana',
+    'Three' => 'orange',
+    'Four' => 'grape',
+    'Five' => 'mango',
+    'Six' => 'pineapple',
+    'Seven' => 'strawberry',
+    'Eight' => 'watermelon'
+];
+arrayOutput("fruits", $fruits);
+
+//echo "My first value is: " . $fruits[0] . "\n"; //Doesn't work
+echo "My first value is: " . $fruits[array_keys($fruits)[0]] . "\n";
+echo "My first value is: " . reset($fruits) . "\n"; //Does not modify the array's value
+arrayOutput("fruits", $fruits);
+
+//echo "My last value is: " . $fruits[$fruits[count($fruits) - 1]] . "\n";
+echo "My last value is: " . $fruits[array_keys($fruits)[count($fruits) - 1]] . "\n";
+echo "My last value is: " . end($fruits) . "\n"; //Does not modify the array's value
+arrayOutput("fruits", $fruits);
+
+$fruits = array_filter($fruits, function ($value) {
+    return strlen($value) > 5;
+});
+arrayOutput("fruits", $fruits);
+
+$fruits = array_map(function ($value) {
+    return ucfirst($value);
+}, $fruits);
+arrayOutput("fruits", $fruits);