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<?php |
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/** |
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* @description 验证码图片类 |
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* @author vicens <[email protected]> |
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*/ |
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namespace Vicens\Captcha; |
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use Symfony\Component\HttpFoundation\Response; |
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class Image |
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{ |
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/** |
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* 已生成的图片 |
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* |
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* @var resource |
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*/ |
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protected $image; |
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public function __construct($image) |
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{ |
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$this->image = $image; |
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} |
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/** |
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* 获取 base64的数据,用做image标签的src |
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* |
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* @return string |
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*/ |
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public function getDataUrl() |
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{ |
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return 'data:image/jpeg;base64,' . $this->getBase64(); |
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} |
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/** |
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* 获取base64 |
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* |
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* @return string |
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*/ |
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public function getBase64() |
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{ |
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return base64_encode($this->getContent()); |
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} |
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/** |
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* 作为img标签输出 |
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* |
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* @param int|null $width img宽 |
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* @param int|null $height img高 |
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* @return string |
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*/ |
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public function html($width = null, $height = null) |
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{ |
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$html = '<img src="' . $this->getDataUrl() . '"" alt="captcha"'; |
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if (is_null($width)) { |
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$html .= ' width="' . $width . '"'; |
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} |
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if (is_null($height)) { |
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$html .= ' height="' . $height . '"'; |
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} |
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$html .= '>'; |
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return $html; |
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} |
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/** |
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* 返回Response响应 |
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* |
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* @return Response |
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*/ |
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public function response() |
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{ |
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return Response::create($this->getContent(), 200, array('Content-type' => 'image/jpeg')); |
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} |
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/** |
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* 获取图片 |
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* |
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* @return resource |
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*/ |
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public function getImage() |
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{ |
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return $this->image; |
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} |
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/** |
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* 获取图片 |
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* |
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* @return resource |
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*/ |
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public function getContext() |
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{ |
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return $this->getImage(); |
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} |
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/** |
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* 保存为图片 |
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* |
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* @param string $filename 文件名 |
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* @return $this |
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*/ |
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public function save($filename) |
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{ |
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$this->output($filename); |
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return $this; |
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} |
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/** |
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* 直接输出 |
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* |
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* @param string|null $filename 文件名 |
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* @return $this |
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*/ |
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public function output($filename = null) |
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{ |
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imagejpeg($this->getContext(), $filename); |
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return $this; |
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} |
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/** |
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* 获取输出内容 |
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* |
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* @return string |
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*/ |
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public function getContent() |
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{ |
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ob_start(); |
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$this->output(); |
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return ob_get_clean(); |
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} |
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} |
vicens /
captcha
