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<?php |
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namespace CodeBlog\ToWebP; |
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use CodeBlog\ToWebP\Convert\Make; |
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use Exception; |
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/** |
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* Class ToWebP |
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* |
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* Converts JPEG & PNG to WebP with PHP |
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* |
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* @author Whallysson Avelino <https://github.com/whallysson> |
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* @package CodeBlog\ToWebP |
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*/ |
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class ToWebP extends Make |
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{ |
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/** @var array */ |
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private $converters = ['imagick', 'cwebp', 'gd']; |
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/** @var array */ |
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protected $preferredConverters = []; |
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/** @var array */ |
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protected $allowedExtensions = ['jpg', 'jpeg', 'png']; |
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/** @var string */ |
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public $image_webp; |
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/** @var string */ |
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public $image_original; |
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/** |
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* ToWebP constructor. |
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* @param string $uploadDir |
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* @param string $fileTypeDir |
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* @param array|string $converters |
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* @throws Exception |
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*/ |
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public function __construct(string $uploadDir, string $fileTypeDir, $converters = []) |
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{ |
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parent::__construct($uploadDir, $fileTypeDir); |
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if ($converters != null) { |
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$this->setConverters($converters); |
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} |
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} |
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/** |
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* Converts image to WebP |
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* |
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* @param string $source Path of input image |
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* @param string $name Path of output image |
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* @param integer $quality Image compression quality (ranging from 0 to 100) |
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* @param boolean $stripMetadata Whether to strip metadata |
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* |
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* @return boolean |
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*/ |
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public function convert(string $source, string $name, int $quality = 85, bool $stripMetadata = true) |
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{ |
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try { |
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$this->image_original = $source; |
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$this->isValidTarget($source); |
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$this->isAllowedExtension($source); |
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$success = false; |
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// set local and name |
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$this->name($name); |
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if (!file_exists("{$this->path}/{$this->name}")) { |
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$success = $this->toConvert($source, "{$this->path}/{$this->name}", $quality, $stripMetadata); |
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} |
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$this->image_webp = "{$this->path}/{$this->name}"; |
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return $success; |
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} catch (Exception $e) { |
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echo 'Error: ' . $e->getMessage(); |
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} |
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} |
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/** |
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* Returns the picture picture formatted with the original image is the source with the type webp |
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* |
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* @param array|null $options |
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* @return string |
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*/ |
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public function picture(array $options = null) |
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{ |
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$picture = null; |
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$img = null; |
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if (!empty($options['picture'])) { |
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foreach ($options['picture'] as $key => $val) { |
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$picture .= " {$key}='{$val}'"; |
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} |
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} |
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if (!empty($options['img'])) { |
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foreach ($options['img'] as $key => $val) { |
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$img .= " {$key}='{$val}'"; |
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} |
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} |
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return "<picture{$picture}> |
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<source srcset='{$this->image_webp}' type='image/webp'> |
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<img src='{$this->image_original}'{$img} /> |
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</picture>"; |
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} |
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/** |
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* @param string $source |
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* @param string $filename |
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* @param int $quality |
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* @param bool $stripMetadata |
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* @return bool |
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*/ |
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private function toConvert(string $source, string $filename, int $quality, bool $stripMetadata) |
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{ |
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$success = false; |
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foreach ($this->setUpConverters() as $currentConverter) { |
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$className = 'CodeBlog\\ToWebP\\Convert\\Converters\\' . ucfirst(strtolower($currentConverter)); |
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if (!class_exists($className)) { continue; } |
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$converter = new $className( $source, $filename, $quality, $stripMetadata ); |
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if (!$converter instanceof AbstractConverter || !is_callable([$converter, 'convert'])) { continue; } |
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$conversion = call_user_func([$converter, 'convert']); |
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if ($conversion) { |
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$success = true; |
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$this->setConverters($currentConverter); |
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break; |
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} |
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} |
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return $success; |
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} |
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/** |
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* Checks whether provided file exists |
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* |
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* @param $filePath |
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* @return bool |
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* @throws Exception |
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*/ |
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private function isValidTarget($filePath) |
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{ |
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if (!file_exists($filePath)) { |
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throw new Exception('File or directory not found: ' . $filePath); |
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} |
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return true; |
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} |
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/** |
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* @param $filePath |
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* @return bool |
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* @throws Exception |
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*/ |
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private function isAllowedExtension($filePath) |
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{ |
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$fileExtension = pathinfo($filePath, PATHINFO_EXTENSION); |
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if (!in_array(strtolower($fileExtension), $this->allowedExtensions)) { |
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throw new Exception('Unsupported file extension: ' . $fileExtension); |
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} |
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return true; |
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} |
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/** |
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* Sets preferred converter(s) |
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* |
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* @param array|string $preferred |
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*/ |
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private function setConverters($preferred = []) |
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{ |
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if (is_string($preferred)) { |
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$this->preferredConverters = (array)$preferred; |
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return; |
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} |
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$this->preferredConverters = $preferred; |
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} |
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/** |
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* Gets preferred converter(s) |
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* |
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* @return array |
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*/ |
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public function getConverters() |
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{ |
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return $this->preferredConverters; |
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} |
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/** |
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* Sets up converters to be used during conversion |
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* |
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* @return array |
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*/ |
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private function setUpConverters() |
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{ |
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// Returns available converters if no preferred converters are set |
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if (empty($this->preferredConverters)) { |
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return $this->converters; |
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} |
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// Returns preferred converters if set & remaining ones be skipped |
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return $this->preferredConverters; |
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} |
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} |
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whallysson /
conveter-php-webp
