add PHP boilerplate

.gitignore

@@ -0,0 +1,9 @@
+/tmp/
+
+# Editors
+.vscode
+.idea
+
+# PHP
+/vendor/
+/coverage/

README.md

@@ -1,5 +1,5 @@
 # NoteCat
 
-Note taking app, similar to Evernote.
-
-"Like Notepad, but meow!"
+Note taking app, similar to Evernote.
+
+"Like Notepad, but meow!"

composer.json

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+{
+    "name": "binarydiv/notecat",
+    "description": "Note taking app. Like Notepad, but meow!",
+    "type": "project",
+    "authors": [
+        {
+            "name": "binaryDiv",
+            "email": "binarydiv@gmail.com"
+        }
+    ],
+    "require": {
+        "php": "^7.4"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9"
+    },
+    "autoload": {
+        "psr-4": {
+            "NoteCat\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\Unit\\": "tests/unit/"
+        }
+    }
+}

phpunit.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.2/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         executionOrder="depends,defects"
+         forceCoversAnnotation="true"
+         beStrictAboutCoversAnnotation="true"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         verbose="true">
+
+    <testsuites>
+        <testsuite name="unit-tests">
+            <directory suffix="Test.php">tests/unit</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+
+    <logging>
+        <log type="coverage-html" target="coverage/" lowUpperBound="60" highLowerBound="100"/>
+        <log type="coverage-text" target="php://stdout" showUncoveredFiles="false"/>
+    </logging>
+</phpunit>

public/index.php

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+<?php
+declare(strict_types=1);
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+use NoteCat\HelloWorld;
+
+$hello = new HelloWorld();
+echo '<b>' . $hello->getHello() . "</b>\n";

src/HelloWorld.php

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+<?php
+declare(strict_types=1);
+
+namespace NoteCat;
+
+class HelloWorld
+{
+    public function getHello(): string
+    {
+        return 'Hello world! :3';
+    }
+}

tests/unit/HelloWorldTest.php

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+<?php
+declare(strict_types=1);
+
+namespace Tests\Unit;
+
+use NoteCat\HelloWorld;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers NoteCat\HelloWorld
+ */
+final class HelloWorldTest extends TestCase
+{
+    public function testGetHello(): void
+    {
+        $hello = new HelloWorld();
+        $this->assertSame('Hello Drone! :3', $hello->getHello());
+    }
+}