[5.x] Add keys and values modifiers

src/Modifiers/CoreModifiers.php

@@ -1328,6 +1328,16 @@ public function keyBy($value, $params)
         return is_array($value) ? $rekeyed->all() : $rekeyed;
     }
 
+    /**
+     * Get the keys of an array.
+     *
+     * @return array|Collection
+     */
+    public function keys($value)
+    {
+        return is_array($value) ? array_keys($value) : $value->keys();
+    }
+
     /**
      * Returns the last $params[0] characters of a string, or the last element of an array.
      *
@@ -2768,6 +2778,16 @@ public function parse_url($value, $params)
         return parse_url($value, $component);
     }
 
+    /**
+     * Get the values of an array.
+     *
+     * @return array|Collection
+     */
+    public function values($value)
+    {
+        return is_array($value) ? array_values($value) : $value->values();
+    }
+
     /**
      * Get the date difference in weeks.
      *

tests/Modifiers/KeysTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Tests\Modifiers;
+
+use Illuminate\Support\Collection;
+use Statamic\Modifiers\Modify;
+use Tests\TestCase;
+
+class KeysTest extends TestCase
+{
+    /** @test */
+    public function it_gets_the_keys_of_an_array(): void
+    {
+        $input = [
+            'chicken' => 'nuggets',
+            'nuggets' => 'Denver',
+        ];
+
+        $modified = $this->modify($input);
+        $this->assertEquals(['chicken', 'nuggets'], $modified);
+    }
+
+    /** @test */
+    public function it_gets_the_keys_of_a_collection(): void
+    {
+        $input = collect([
+            'chicken' => 'nuggets',
+            'nuggets' => 'Denver',
+        ]);
+
+        $modified = $this->modify($input);
+        $this->assertInstanceOf(Collection::class, $modified);
+        $this->assertEquals(['chicken', 'nuggets'], $modified->all());
+    }
+
+    private function modify($value)
+    {
+        return Modify::value($value)->keys()->fetch();
+    }
+}

tests/Modifiers/ValuesTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Tests\Modifiers;
+
+use Illuminate\Support\Collection;
+use Statamic\Modifiers\Modify;
+use Tests\TestCase;
+
+class ValuesTest extends TestCase
+{
+    /** @test */
+    public function it_gets_the_values_of_an_array(): void
+    {
+        $input = [
+            'chicken' => 'nuggets',
+            'nuggets' => 'Denver',
+        ];
+
+        $modified = $this->modify($input);
+        $this->assertEquals(['nuggets', 'Denver'], $modified);
+    }
+
+    /** @test */
+    public function it_gets_the_values_of_a_collection(): void
+    {
+        $input = collect([
+            'chicken' => 'nuggets',
+            'nuggets' => 'Denver',
+        ]);
+
+        $modified = $this->modify($input);
+        $this->assertInstanceOf(Collection::class, $modified);
+        $this->assertEquals(['nuggets', 'Denver'], $modified->all());
+    }
+
+    private function modify($value)
+    {
+        return Modify::value($value)->values()->fetch();
+    }
+}