diff --git a/php/README.md b/php/README.md
index 0580b4a1..a2d15aa4 100644
--- a/php/README.md
+++ b/php/README.md
@@ -7,35 +7,14 @@ GildedRose Kata.
 
 The kata uses:
 
-- [PHP 7.3 or 7.4 or 8.0+](https://www.php.net/downloads.php)
+- [PHP 8.0+](https://www.php.net/downloads.php)
 - [Composer](https://getcomposer.org)
-
-Recommended:
-
 - [Git](https://git-scm.com/downloads)
 
-Clone the repository
-
-```sh
-git clone git@github.com:emilybache/GildedRose-Refactoring-Kata.git
-```
-
-or
-
-```shell script
-git clone https://github.com/emilybache/GildedRose-Refactoring-Kata.git
-```
-
-Install all the dependencies using composer
-
-```shell script
-cd ./GildedRose-Refactoring-Kata/php
-composer install
-```
 
 ## Dependencies
 
-The project uses composer to install:
+The project used composer to install:
 
 - [PHPUnit](https://phpunit.de/)
 - [ApprovalTests.PHP](https://github.com/approvals/ApprovalTests.php)
@@ -46,19 +25,49 @@ The project uses composer to install:
 ## Folders
 
 - `src` - contains the two classes:
-    - `Item.php` - this class should not be changed
-    - `GildedRose.php` - this class needs to be refactored, and the new feature added
-- `tests` - contains the tests
+    - `Item.php` - this class was not changed;
+    - `GildedRose.php` - this class was refactored, and the new feature added;
+- `tests` - contains the tests:
     - `GildedRoseTest.php` - starter test.
-        - Tip: ApprovalTests has been included as a dev dependency, see the PHP version of
-          the [Theatrical Players Refactoring Kata](https://github.com/emilybache/Theatrical-Players-Refactoring-Kata/)
-          for an example
 - `Fixture`
-    - `texttest_fixture.php` this could be used by an ApprovalTests, or run from the command line
+    - `texttest_fixture.php` this was used by an ApprovalTests, and run from the command line
 
 ## Testing
 
-PHPUnit is configured for testing, a composer script has been provided. To run the unit tests, from the root of the PHP
+Tests were written for all the requirement specifications listed in ["Gilded Rose Requirements"](https://github.com/emilybache/GildedRose-Refactoring-Kata/tree/master/GildedRoseRequirements.txt).
+
+Test methods takes initial (starting) values, that can be changed accordingly. E.g., "31" for sell_in value and "50" for quality value:
+
+```shell
+$items = [new Item('+5 Dexterity Vest', 31, 50)];
+```
+puts them in GildedRose Class updateQuality() method and checks for expected values. E.g., "30" for sell_in value and "49" for quality value:
+
+```shell
+self::assertSame(30, $items[0]->sell_in);
+self::assertSame(49, $items[0]->quality);
+```
+
+Furthermore, where more than one arbitrary arguments are desired for single test, @dataProvider method was used and relevant Scenarios were created. E.g., 'data' array accepts initial values for sell_in and quality and 'expect' array - expected ones.
+
+```shell
+public function qualityNeverNegativeScenario(): array
+    {
+        return [
+            [[
+                'data' => [
+                    'sell_in' => 1,
+                    'quality' => 0,
+                ],
+                'expect' => [
+                    'sell_in' => 0,
+                    'quality' => 0,
+                    
+                ]
+            ]]
+```
+
+To run the unit tests, from the root of the PHP
 project run:
 
 ```shell script
@@ -72,6 +81,14 @@ PHPUnit `composer test` can be run:
 pu
 ```
 
+### Approval Test
+
+'sell_in' and 'quality' values of GildedRose items for 31 day were generated via terminal command from the root of the PHP project:
+
+```shell
+php fixtures/texttest_fixture.php
+```
+and compared to provided ["Approval Test document"](tests/approvals/ApprovalTest.testTestFixture.approved.txt) until data were identical.
 ### Tests with Coverage Report
 
 To run all test and generate a html coverage report run:
diff --git a/php/composer.json b/php/composer.json
index 71eff6c3..9e569823 100644
--- a/php/composer.json
+++ b/php/composer.json
@@ -16,7 +16,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",
-        "phpstan/phpstan": "^0.12.85",
+        "phpstan/phpstan": "^0.12.86",
         "phpstan/phpstan-phpunit": "^0.12.18",
         "symplify/easy-coding-standard": "^9.3",
         "symplify/phpstan-extensions": "^9.3",
diff --git a/php/composer.lock b/php/composer.lock
index 22e7b9d4..89aa5220 100644
--- a/php/composer.lock
+++ b/php/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "aaa7d8275c5e59ff696fadc6432010fc",
+    "content-hash": "530fbe3fa428ed44b7424eef4500d9ef",
     "packages": [],
     "packages-dev": [
         {
@@ -1480,16 +1480,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.85",
+            "version": "0.12.86",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "20e6333c0067875ad7697cd8acdf245c6ef69d03"
+                "reference": "a84fdc53ecca7643dbc89ef8880d8b393a6c155a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/20e6333c0067875ad7697cd8acdf245c6ef69d03",
-                "reference": "20e6333c0067875ad7697cd8acdf245c6ef69d03",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/a84fdc53ecca7643dbc89ef8880d8b393a6c155a",
+                "reference": "a84fdc53ecca7643dbc89ef8880d8b393a6c155a",
                 "shasum": ""
             },
             "require": {
@@ -1520,7 +1520,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/0.12.85"
+                "source": "https://github.com/phpstan/phpstan/tree/0.12.86"
             },
             "funding": [
                 {
@@ -1536,7 +1536,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-27T14:13:16+00:00"
+            "time": "2021-05-08T11:29:01+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
@@ -6542,7 +6542,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.3 || ^8.0"
+        "php": "^8.0"
     },
     "platform-dev": [],
     "plugin-api-version": "2.0.0"
diff --git a/php/src/GildedRose.php b/php/src/GildedRose.php
index 760147cf..44c020d6 100644
--- a/php/src/GildedRose.php
+++ b/php/src/GildedRose.php
@@ -4,7 +4,9 @@ namespace GildedRose;
 
 final class GildedRose
 {
-    public function __construct(private array $items)
+    public function __construct(
+        private array $items
+    )
     {
     }
 
@@ -17,7 +19,7 @@ final class GildedRose
             }
 
             $disabledNames = ['Aged Brie', 'Backstage passes to a TAFKAL80ETC concert'];
-            if (in_array($item->name, $disabledNames)) {
+            if (in_array($item->name, $disabledNames, true)) {
                 if ($item->quality < 50) {
                     $this->increaseQuality($item, 1);
                     if ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {
@@ -45,9 +47,9 @@ final class GildedRose
                     if ($item->quality < 50) {
                         $this->increaseQuality($item, 1);
                     }
-                } else if ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {
+                } elseif ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {
                     $this->lowerQuality($item, $item->quality);
-                } else if ($item->quality > 0) {
+                } elseif ($item->quality > 0) {
                     $this->lowerQuality($item, 1);
                 }
             }
@@ -75,6 +77,6 @@ final class GildedRose
 
     private function lowerSellIn(Item $item): void
     {
-        $item->sell_in -= 1;
+        --$item->sell_in;
     }
-}
\ No newline at end of file
+}
diff --git a/php/tests/GildedRoseTest.php b/php/tests/GildedRoseTest.php
index e2938576..00b4192f 100644
--- a/php/tests/GildedRoseTest.php
+++ b/php/tests/GildedRoseTest.php
@@ -36,7 +36,9 @@ class GildedRoseTest extends TestCase
         self::assertSame(-2, $items[0]->sell_in);
     }
 
-    /** @dataProvider qualityNeverNegativeScenario */
+    /**
+     * @dataProvider qualityNeverNegativeScenario
+     */
     public function testQualityNeverNegative(array $qualityNeverNegativeScenario): void
     {
         $items = [new Item('foo', $qualityNeverNegativeScenario['data']['sell_in'], $qualityNeverNegativeScenario['data']['quality'])];
@@ -50,18 +52,35 @@ class GildedRoseTest extends TestCase
     {
         return [
             [[
-                'data' => ['sell_in' => 1, 'quality' => 0],
-                'expect' => ['sell_in' => 0, 'quality' => 0],
+                'data' => [
+                    'sell_in' => 1,
+                    'quality' => 0,
+                ],
+                'expect' => [
+                    'sell_in' => 0,
+                    'quality' => 0,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => -1, 'quality' => 1],
-                'expect' => ['sell_in' => -2, 'quality' => 0],
-            ]]
+                'data' => [
+                    'sell_in' => -1,
+                    'quality' => 1,
+                ],
+                'expect' => [
+                    'sell_in' => -2,
+                    'quality' => 0,
+                    
+                ],
+            ]],
         ];
     }
+
     /** end of QualityNeverNegativeScenario */
 
-    /** @dataProvider agedBrieScenario */
+    /**
+     * @dataProvider agedBrieScenario
+     */
     public function testAgedBrieQualityIncreases(array $agedBrieScenario): void
     {
         $items = [new Item('Aged Brie', $agedBrieScenario['data']['sell_in'], $agedBrieScenario['data']['quality'])];
@@ -75,18 +94,35 @@ class GildedRoseTest extends TestCase
     {
         return [
             [[
-                'data' => ['sell_in' => 11, 'quality' => 49],
-                'expect' => ['sell_in' => 10, 'quality' => 50],
+                'data' => [
+                    'sell_in' => 11,
+                    'quality' => 49,
+                ],
+                'expect' => [
+                    'sell_in' => 10,
+                    'quality' => 50,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 0, 'quality' => 47],
-                'expect' => ['sell_in' => -1, 'quality' => 49],
-            ]]
+                'data' => [
+                    'sell_in' => 0,
+                    'quality' => 47,
+                ],
+                'expect' => [
+                    'sell_in' => -1,
+                    'quality' => 49,
+                    
+                ],
+            ]],
         ];
     }
+
     /** end of agedBrieScenario */
 
-    /** @dataProvider sulfurasScenario */
+    /**
+     * @dataProvider sulfurasScenario
+     */
     public function testSulfurasQualityAndSellinStays(array $sulfurasScenario): void
     {
         $items = [new Item('Sulfuras, Hand of Ragnaros', $sulfurasScenario['data']['sell_in'], $sulfurasScenario['data']['quality'])];
@@ -100,22 +136,46 @@ class GildedRoseTest extends TestCase
     {
         return [
             [[
-                'data' => ['sell_in' => 31, 'quality' => 80],
-                'expect' => ['sell_in' => 31, 'quality' => 80],
+                'data' => [
+                    'sell_in' => 31,
+                    'quality' => 80,
+                ],
+                'expect' => [
+                    'sell_in' => 31,
+                    'quality' => 80,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 0, 'quality' => 80],
-                'expect' => ['sell_in' => 0, 'quality' => 80],
+                'data' => [
+                    'sell_in' => 0,
+                    'quality' => 80,
+                ],
+                'expect' => [
+                    'sell_in' => 0,
+                    'quality' => 80,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => -1, 'quality' => 80],
-                'expect' => ['sell_in' => -1, 'quality' => 80],
-            ]]
+                'data' => [
+                    'sell_in' => -1,
+                    'quality' => 80,
+                ],
+                'expect' => [
+                    'sell_in' => -1,
+                    'quality' => 80,
+                    
+                ],
+            ]],
         ];
     }
+
     /** end of sulfurasScenario */
 
-    /** @dataProvider backstagePassScenario */
+    /**
+     * @dataProvider backstagePassScenario
+     */
     public function testBackstagePassQuality(array $backstagePassScenario): void
     {
         $items = [new Item('Backstage passes to a TAFKAL80ETC concert', $backstagePassScenario['data']['sell_in'], $backstagePassScenario['data']['quality'])];
@@ -129,26 +189,57 @@ class GildedRoseTest extends TestCase
     {
         return [
             [[
-                'data' => ['sell_in' => 31, 'quality' => 43],
-                'expect' => ['sell_in' => 30, 'quality' => 44],
+                'data' => [
+                    'sell_in' => 31,
+                    'quality' => 43,
+                ],
+                'expect' => [
+                    'sell_in' => 30,
+                    'quality' => 44,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 10, 'quality' => 44],
-                'expect' => ['sell_in' => 9, 'quality' => 46],
+                'data' => [
+                    'sell_in' => 10,
+                    'quality' => 44,
+                ],
+                'expect' => [
+                    'sell_in' => 9,
+                    'quality' => 46,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 1, 'quality' => 46],
-                'expect' => ['sell_in' => 0, 'quality' => 49],
+                'data' => [
+                    'sell_in' => 1,
+                    'quality' => 46,
+                ],
+                'expect' => [
+                    'sell_in' => 0,
+                    'quality' => 49,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 0, 'quality' => 49],
-                'expect' => ['sell_in' => -1, 'quality' => 0],
-            ]]
+                'data' => [
+                    'sell_in' => 0,
+                    'quality' => 49,
+                ],
+                'expect' => [
+                    'sell_in' => -1,
+                    'quality' => 0,
+                    
+                ],
+            ]],
         ];
     }
+
     /** end of backstageScenario */
 
-    /** @dataProvider conjuredItemsScenario */
+    /**
+     * @dataProvider conjuredItemsScenario
+     */
     public function testConjuredItems(array $conjuredItemsScenario): void
     {
         $items = [new Item('Conjured Mana Cake', $conjuredItemsScenario['data']['sell_in'], $conjuredItemsScenario['data']['quality'])];
@@ -162,14 +253,29 @@ class GildedRoseTest extends TestCase
     {
         return [
             [[
-                'data' => ['sell_in' => 31, 'quality' => 50],
-                'expect' => ['sell_in' => 30, 'quality' => 48],
+                'data' => [
+                    'sell_in' => 31,
+                    'quality' => 50,
+                ],
+                'expect' => [
+                    'sell_in' => 30,
+                    'quality' => 48,
+                    
+                ],
             ]],
             [[
-                'data' => ['sell_in' => 0, 'quality' => 48],
-                'expect' => ['sell_in' => -1, 'quality' => 44],
-            ]]
+                'data' => [
+                    'sell_in' => 0,
+                    'quality' => 48,
+                ],
+                'expect' => [
+                    'sell_in' => -1,
+                    'quality' => 44,
+                    
+                ],
+            ]],
         ];
     }
+
     /** end of conjuredItemsScenario */
-}
\ No newline at end of file
+}