php图文合成文字居中(png图片合成)

header(‘Content-type:text/html;charset=utf-8‘);/** * png图文合成 by wangzhaobo * @param ?string $pic_path ??图片目录 * @param ?array $text ??????文字 * @param ?array $font_file ?路径 * @param ?array $font_size ?文字大小 * @param ?array $font_pos_y 文字距离图片高度 * @return string ????????????合成图片的名称 */function signImg($pic_path,$text,$font_file,$font_size,$font_pos_y){ ???//图片信息 ???list($pic_w, $pic_h, $pic_type) = getimagesize($pic_path); ???//创建图片的实例 ???$pic = imagecreatefrompng($pic_path); ???imagesavealpha($pic,true);//这里很重要 意思是不要丢了图像的透明色; ???$white = imagecolorallocate($pic, 255, 255, 255);//默认的文字颜色 ???$yellow = imagecolorallocate($pic, 236, 185, 7);//默认的文字颜色 ???$font_color = [$white,$yellow,$white,$white]; ???foreach($text as $key=>$value){ ???????$arr = imagettfbbox($font_size[$key],0,$font_file[$key],$text[$key]); ???????$text_width = $arr[2]-$arr[0]; ???????imagefttext($pic, $font_size[$key], 0, ($pic_w-$text_width)/2, $font_pos_y[$key], $font_color[$key], $font_file[$key], $text[$key]); ???} ???//按照画布类型输出图片 ???$pngName = time().rand(0,9).".png";//生成图片名称 ???switch ($pic_type) { ???????case 1://GIF ???????????????????case 2://JPG ???????????????????case 3://PNG ???????????// //直接输出图片 ???????????header(‘Content-Type: image/png‘); ???????????imagepng($pic); ???????????????????????// 保存图片路径 ???????????// imagepng($pic,"./assets/sign/".$pngName); ???????????// return $pngName; ???????????break; ???????default: ???????????break; ???} ???imagedestroy($pic);} ???$pic_path = ‘./assets/images/backgroud.png‘; ???$text = [ ???????‘若水电影电竞女神巡演赛成都站‘, ???????‘王若水‘, ???????‘观赛时间：2017.9.2 12:30‘, ???????‘观赛地点：万达电影地方电竞女神巡演赛（成都站）‘ ???]; ???$font_file = [ ???????"./assets/fonts/MSYH.TTF",//粗体 ???????"./assets/fonts/MSYH.TTF",//粗体 ???????"./assets/fonts/MSYH.TTF",//细体 ???????"./assets/fonts/MSYH.TTF"//细体 ???]; ???$font_size = [24,42,18,18]; ???$font_pos_y = [298,470,600,650]; ???signImg($pic_path,$text,$font_file,$font_size,$font_pos_y); ???// header("Content-type: image/png"); ????// echo $a;