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+ }
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+ "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+ "time": "2015-07-28T20:34:47+00:00"
+ },
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+ },
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+ "MIT"
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+ "name": "Bernhard Schussek",
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+ }
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diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..f1a03b6
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,8 @@
+
+
+
+
+ ./tests
+
+
+
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..2347a44
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,78 @@
+# PHP Meta Tags [](https://github.com/pedroborges/meta-tags/releases) [](https://github.com/pedroborges/meta-tags/issues)
+
+HTML meta tags generator for PHP. Supports [Open Graph](http://ogp.me) and [Twitter Cards](https://dev.twitter.com/cards/overview) out of the box.
+
+## Installation
+
+ composer require pedroborges/meta-tags
+
+## Basic Usage
+Create a new `MetaTags` instance then you are ready to start adding meta tags:
+
+```php
+use PedroBorges\MetaTags\MetaTags;
+
+$tags = new MetaTags;
+
+// My Awesome Site
+$tags->title('My Awesome Site');
+
+//
+$tags->meta('description', 'My site description');
+
+//
+//
+$tags->link('canonical', 'https://pedroborg.es');
+$tags->link('alternate', [
+'hreflang' => 'en',
+'href' => 'https://en.pedroborg.es'
+]);
+
+//
+//
+//
+//
+$tags->head->og('title', 'The title');
+$tags->head->og('type', 'website');
+$tags->head->og('url', 'https://pedroborg.es');
+$tags->head->og('image', 'https://pedroborg.es/cover.jpg');
+
+//
+//
+$tags->head->twitter('card', 'summary');
+$tags->head->twitter('site', '@pedroborg_es');
+```
+
+When you are ready to output them, use the `render` method inside your template `` element:
+
+```php
+
+
+
+
+ render() ?>
+```
+
+By default Meta Tag will indent the tags with 4 spaces and use the following order:
+
+1. ``
+1. `<meta>` (General)
+1. `<meta property="og:*">` (Open Graph)
+1. `<meta name="twitter:*">` (Twitter Cards)
+1. `<link>`
+
+You can change that when instantiating the `MetaTag` class:
+
+```php
+use PedroBorges\MetaTags\MetaTags;
+
+$tags = new MetaTags("\t", ['meta', 'title', 'link', 'og', 'twitter']);
+```
+
+## Change Log
+All notable changes to this project will be documented at: <https://github.com/pedroborges/meta-tags/blob/master/changelog.md>
+
+## License
+Meta Tags is open-sourced software licensed under the [MIT license](http://www.opensource.org/licenses/mit-license.php).
+
+Copyright © 2017 Pedro Borges <oi@pedroborg.es>
diff --git a/src/MetaTags.php b/src/MetaTags.php
new file mode 100644
index 0000000..de4a430
--- /dev/null
+++ b/src/MetaTags.php
@@ -0,0 +1,279 @@
+<?php
+
+namespace PedroBorges\MetaTags;
+
+/**
+ * PHP Meta Tags
+ *
+ * @version 0.0.1
+ * @author Pedro Borges <oi@pedroborg.es>
+ * @copyright Pedro Borges <oi@pedroborg.es>
+ * @link https://github.com/pedroborges/meta-tags
+ * @license MIT
+ */
+
+class MetaTags
+{
+ protected $indentation;
+ protected $order;
+
+ protected $tags = [];
+
+ /**
+ * Create a new instance.
+ *
+ * @param string $indentation
+ * @param array $order
+ *
+ * @return void
+ */
+ public function __construct($indentation = null, $order = null)
+ {
+ $this->indentation = $indentation ?: ' ';
+ $this->order = $order ?: ['title', 'meta', 'og', 'twitter', 'link'];
+ }
+
+ /**
+ * Build an HTML link tag.
+ *
+ * @param string $key
+ * @param string $value
+ *
+ * @return string
+ */
+ public function link($key, $value)
+ {
+ $attributes = ['rel' => $key];
+
+ if (is_array($value)) {
+ foreach ($value as $key => $v) { $attributes[$key] = $v; }
+ } else {
+ $attributes['href'] = $value;
+ }
+
+ $tag = $this->createTag('link', $attributes);
+
+ $this->addToTagsGroup('link', $key, $tag);
+
+ return $tag;
+ }
+
+ /**
+ * Build an HTML meta tag.
+ *
+ * @param string $key
+ * @param string $value
+ *
+ * @return string
+ */
+ public function meta($key, $value)
+ {
+ $attributes = ['name' => $key];
+
+ if (is_array($value)) {
+ foreach ($value as $key => $v) { $attributes[$key] = $v; }
+ } else {
+ $attributes['content'] = $value;
+ }
+
+ $tag = $this->createTag('meta', $attributes);
+
+ $this->addToTagsGroup('meta', $key, $tag);
+
+ return $tag;
+ }
+
+ /**
+ * Build an Open Graph meta tag.
+ *
+ * @param string $key
+ * @param string $value
+ * @param boolean $prefixed
+ *
+ * @return string
+ */
+ public function og($key, $value, $prefixed = true)
+ {
+ $key = $prefixed ? "og:{$key}" : $key;
+ $tag = $this->createTag('meta', [
+ 'property' => $key,
+ 'content' => $value
+ ]);
+
+ $this->addToTagsGroup('og', $key, $tag);
+
+ return $tag;
+ }
+
+ /**
+ * Build a Title HTML tag.
+ *
+ * @param string $value
+ *
+ * @return string
+ */
+ public function title($value)
+ {
+ if (! empty($value)) {
+ $tag = "<title>{$this->escapeAll($value)}";
+
+ $this->tags['title'][] = $tag;
+
+ return $tag;
+ }
+ }
+
+ /**
+ * Build a Twitter Card meta tag.
+ *
+ * @param string $key
+ * @param string $value
+ * @param boolean $prefixed
+ *
+ * @return string
+ */
+ public function twitter($key, $value, $prefixed = true)
+ {
+ $key = $prefixed ? "twitter:{$key}" : $key;
+ $tag = $this->createTag('meta', [
+ 'name' => $key,
+ 'content' => $value
+ ]);
+
+ $this->addToTagsGroup('twitter', $key, $tag);
+
+ return $tag;
+ }
+
+ /**
+ * Render all registered HTML meta tags
+ *
+ * @return string
+ */
+ public function render()
+ {
+ $html = [];
+
+ foreach ($this->order as $group) {
+ $html[] = $this->renderGroup($group);
+ }
+
+ return implode('', $html);
+ }
+
+ /**
+ * Render all HTML meta tags from a specific group.
+ *
+ * @param string $group
+ *
+ * @return string
+ */
+ protected function renderGroup($group)
+ {
+ if (! isset($this->tags[$group])) return;
+
+ $html = [];
+
+ foreach ($this->tags[$group] as $tag) {
+ if (is_array($tag)) {
+ foreach ($tag as $t) {
+ $html[] = $t;
+ }
+ } else {
+ $html[] = $tag;
+ }
+ }
+
+ return count($html) > 0
+ ? $this->indentation . implode("\n" . $this->indentation, $html) . "\n"
+ : '';
+ }
+
+ /**
+ * Add single HTML element to tags group.
+ *
+ * @param string $group
+ * @param string $key
+ * @param string $tag
+ *
+ * @return void
+ */
+ protected function addToTagsGroup($group, $key, $tag)
+ {
+ if (isset($this->tags[$group][$key])) {
+ $existingTag = $this->tags[$group][$key];
+
+ if (is_array($existingTag)) {
+ $this->tags[$group][$key][] = $tag;
+ } else {
+ $this->tags[$group][$key] = [$existingTag, $tag];
+ }
+ } else {
+ $this->tags[$group][$key] = $tag;
+ }
+ }
+
+ /**
+ * Build an HTML attribute string from an array.
+ *
+ * @param array $attributes
+ *
+ * @return string
+ */
+ protected function attributes(array $attributes)
+ {
+ $html = [];
+
+ foreach ($attributes as $key => $value) {
+ $element = $this->attributeElement($key, $value);
+
+ if (! is_null($element)) {
+ $html[] = $element;
+ }
+ }
+
+ return count($html) > 0 ? ' ' . implode(' ', $html) : '';
+ }
+
+ /**
+ * Build a single attribute element.
+ *
+ * @param string $key
+ * @param string $value
+ *
+ * @return string
+ */
+ protected function attributeElement($key, $value)
+ {
+ if (! is_null($value)) {
+ return $key . '="' . $this->escapeAll($value) . '"';
+ }
+ }
+
+ /**
+ * Build an HTML tag
+ *
+ * @param string $tagName
+ * @param array $attributes
+ *
+ * @return string
+ */
+ protected function createTag($tagName, $attributes)
+ {
+ if (! empty($tagName) && is_array($attributes)) {
+ return "<{$tagName}{$this->attributes($attributes)}>";
+ }
+ }
+
+ /**
+ * Replace special characters with HTML entities
+ *
+ * @param string $value
+ *
+ * @return string
+ */
+ protected function escapeAll($value)
+ {
+ return htmlentities($value, ENT_QUOTES, 'UTF-8');
+ }
+}
diff --git a/tests/MetaTagsTest.php b/tests/MetaTagsTest.php
new file mode 100644
index 0000000..ba51e8a
--- /dev/null
+++ b/tests/MetaTagsTest.php
@@ -0,0 +1,103 @@
+head = new MetaTags;
+ }
+
+ public function testTitleTag()
+ {
+ $tag = $this->head->title('"Title tag" test');
+
+ $this->assertEquals('"Title tag" test', $tag);
+ }
+
+ public function testArrayOfTags()
+ {
+ $tag1 = $this->head->link('alternate', [
+ 'hreflang' => 'pt-br',
+ 'href' => 'https://br.pedroborg.es'
+ ]);
+
+ $tag2 = $this->head->link('alternate', [
+ 'hreflang' => 'en-us',
+ 'href' => 'https://en.pedroborg.es'
+ ]);
+
+ $html = $this->head->render();
+
+ $expectedHtml = <<<'EOD'
+
+
+
+EOD;
+
+ $this->assertEquals($expectedHtml, $html);
+ }
+
+ public function testLinkTag()
+ {
+ $tag = $this->head->link('canonical', 'https://pedroborg.es');
+ $alternate = $this->head->link('alternate', [
+ 'hreflang' => 'pt-br',
+ 'href' => 'https://br.pedroborg.es'
+ ]);
+
+ $this->assertEquals('', $tag);
+ $this->assertEquals('', $alternate);
+ }
+
+ public function testMetaTag()
+ {
+ $tag = $this->head->meta('description', 'Meta tag test');
+ $encoded = $this->head->meta('description', '"Meta tag" test');
+
+ $this->assertEquals('', $tag);
+ $this->assertEquals('', $encoded);
+ }
+
+ public function testOpenGraphTag()
+ {
+ $tag = $this->head->og('title', 'Open Graph test');
+ $preffixed = $this->head->og('og:title', 'Open Graph test', false);
+
+ $this->assertEquals('', $tag);
+ $this->assertEquals('', $preffixed);
+ }
+
+ public function testTwitterCardTag()
+ {
+ $tag = $this->head->twitter('card', 'summary');
+ $preffixed = $this->head->twitter('twitter:card', 'summary', false);
+
+ $this->assertEquals('', $tag);
+ $this->assertEquals('', $preffixed);
+ }
+
+ public function testRendering()
+ {
+ $this->head->link('canonical', 'https://pedroborg.es');
+ $this->head->twitter('card', 'summary');
+ $this->head->title(' tag test');
+ $this->head->og('title', 'Open Graph test');
+ $this->head->meta('description', '"Meta Tags" test');
+
+ $html = $this->head->render();
+
+ $expectedHtml = <<<'EOD'
+ <title><title> tag test
+
+
+
+
+
+EOD;
+
+ $this->assertEquals($expectedHtml, $html);
+ }
+}
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..11691a2
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,4 @@
+