This time I will bring you the function of sharing pictures in PHP. What are the precautions on how to use the function of sharing pictures in PHP? The following is a practical case, let’s take a look.
Recent work requirements require the generation of shared images. Initially, there were various problems with the html2canvas screenshot plug-in of js. Later, the PG library of PHP was used to generate images in the background. Various problems were happily solved and the effect we wanted to achieve was achieved. As shown below:
Assume that the resource folder used in the code is in the current code_png directory:
/** * 分享图片生成 * @param $gData 商品数据,array * @param $codeName 二维码图片 * @param $fileName string 保存文件名,默认空则直接输入图片 */ function createSharePng($gData,$codeName,$fileName = ''){ //创建画布 $im = imagecreatetruecolor(618, 1000); //填充画布背景色 $color = imagecolorallocate($im, 255, 255, 255); imagefill($im, 0, 0, $color); //字体文件 $font_file = "code_png/msyh.ttf"; $font_file_bold = "code_png/msyh_bold.ttf"; //设定字体的颜色 $font_color_1 = ImageColorAllocate ($im, 140, 140, 140); $font_color_2 = ImageColorAllocate ($im, 28, 28, 28); $font_color_3 = ImageColorAllocate ($im, 129, 129, 129); $font_color_red = ImageColorAllocate ($im, 217, 45, 32); $fang_bg_color = ImageColorAllocate ($im, 254, 216, 217); //Logo list($l_w,$l_h) = getimagesize('code_png/logo100_100.png'); $logoImg = @imagecreatefrompng('code_png/logo100_100.png'); imagecopyresized($im, $logoImg, 274, 28, 0, 0, 70, 70, $l_w, $l_h); //温馨提示 imagettftext($im, 14,0, 100, 130, $font_color_1 ,$font_file, '温馨提示:喜欢长按图片识别二维码即可前往购买'); //商品图片 list($g_w,$g_h) = getimagesize($gData['pic']); $goodImg = createImageFromFile($gData['pic']); imagecopyresized($im, $goodImg, 0, 185, 0, 0, 618, 618, $g_w, $g_h); //二维码 list($code_w,$code_h) = getimagesize($codeName); $codeImg = createImageFromFile($codeName); imagecopyresized($im, $codeImg, 440, 820, 0, 0, 170, 170, $code_w, $code_h); //商品描述 $theTitle = cn_row_substr($gData['title'],2,19); imagettftext($im, 14,0, 8, 845, $font_color_2 ,$font_file, $theTitle[1]); imagettftext($im, 14,0, 8, 875, $font_color_2 ,$font_file, $theTitle[2]); imagettftext($im, 14,0, 8, 935, $font_color_2 ,$font_file, "券后价¥"); imagettftext($im, 28,0, 80, 935, $font_color_red ,$font_file_bold, $gData["price"]); imagettftext($im, 14,0, 8,970, $font_color_3 ,$font_file, "现价¥".$gData["original_price"]); //优惠券 if($gData['coupon_price']){ imagerectangle ($im, 125 , 950 , 160 , 975 , $font_color_3); imagefilledrectangle ($im, 126 , 951 , 159 , 974 , $fang_bg_color); imagettftext($im, 14,0, 135,970, $font_color_3 ,$font_file, "券"); $coupon_price = strval($gData['coupon_price']); imagerectangle ($im, 160 , 950 , 198 + (strlen($coupon_price)* 10), 975 , $font_color_3); imagettftext($im, 14,0, 170,970, $font_color_3 ,$font_file, $coupon_price."元"); } //输出图片 if($fileName){ imagepng ($im,$fileName); }else{ Header("Content-Type: image/png"); imagepng ($im); } //释放空间 imagedestroy($im); imagedestroy($goodImg); imagedestroy($codeImg); } /** * 从图片文件创建Image资源 * @param $file 图片文件,支持url * @return bool|resource 成功返回图片image资源,失败返回false */ function createImageFromFile($file){ if(preg_match('/http(s)?:\/\//',$file)){ $fileSuffix = getNetworkImgType($file); }else{ $fileSuffix = pathinfo($file, PATHINFO_EXTENSION); } if(!$fileSuffix) return false; switch ($fileSuffix){ case 'jpeg': $theImage = @imagecreatefromjpeg($file); break; case 'jpg': $theImage = @imagecreatefromjpeg($file); break; case 'png': $theImage = @imagecreatefrompng($file); break; case 'gif': $theImage = @imagecreatefromgif($file); break; default: $theImage = @imagecreatefromstring(file_get_contents($file)); break; } return $theImage; } /** * 获取网络图片类型 * @param $url 网络图片url,支持不带后缀名url * @return bool */ function getNetworkImgType($url){ $ch = curl_init(); //初始化curl curl_setopt($ch, CURLOPT_URL, $url); //设置需要获取的URL curl_setopt($ch, CURLOPT_NOBODY, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);//设置超时 curl_setopt($ch, CURLOPT_TIMEOUT, 3); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //支持https curl_exec($ch);//执行curl会话 $http_code = curl_getinfo($ch);//获取curl连接资源句柄信息 curl_close($ch);//关闭资源连接 if ($http_code['http_code'] == 200) { $theImgType = explode('/',$http_code['content_type']); if($theImgType[0] == 'image'){ return $theImgType[1]; }else{ return false; } }else{ return false; } } /** * 分行连续截取字符串 * @param $str 需要截取的字符串,UTF-8 * @param int $row 截取的行数 * @param int $number 每行截取的字数,中文长度 * @param bool $suffix 最后行是否添加‘...'后缀 * @return array 返回数组共$row个元素,下标1到$row */ function cn_row_substr($str,$row = 1,$number = 10,$suffix = true){ $result = array(); for ($r=1;$r<=$row;$r++){ $result[$r] = ''; } $str = trim($str); if(!$str) return $result; $theStrlen = strlen($str); //每行实际字节长度 $oneRowNum = $number * 3; for($r=1;$r<=$row;$r++){ if($r == $row and $theStrlen > $r * $oneRowNum and $suffix){ $result[$r] = mg_cn_substr($str,$oneRowNum-6,($r-1)* $oneRowNum).'...'; }else{ $result[$r] = mg_cn_substr($str,$oneRowNum,($r-1)* $oneRowNum); } if($theStrlen < $r * $oneRowNum) break; } return $result; } /** * 按字节截取utf-8字符串 * 识别汉字全角符号,全角中文3个字节,半角英文1个字节 * @param $str 需要切取的字符串 * @param $len 截取长度[字节] * @param int $start 截取开始位置,默认0 * @return string */ function mg_cn_substr($str,$len,$start = 0){ $q_str = ''; $q_strlen = ($start + $len)>strlen($str) ? strlen($str) : ($start + $len); //如果start不为起始位置,若起始位置为乱码就按照UTF-8编码获取新start if($start and json_encode(substr($str,$start,1)) === false){ for($a=0;$a<3;$a++){ $new_start = $start + $a; $m_str = substr($str,$new_start,3); if(json_encode($m_str) !== false) { $start = $new_start; break; } } } //切取内容 for($i=$start;$i<$q_strlen;$i++){ //ord()函数取得substr()的第一个字符的ASCII码,如果大于0xa0的话则是中文字符 if(ord(substr($str,$i,1))>0xa0){ $q_str .= substr($str,$i,3); $i+=2; }else{ $q_str .= substr($str,$i,1); } } return $q_str; } //使用方法------------------------------------------------- //数据格式,如没有优惠券coupon_price值为0。 $gData = [ 'pic' => 'code_png/nv_img.jpg', 'title' =>'chic韩版工装羽绒棉服女冬中长款2017新款棉袄大毛领收腰棉衣外套', 'price' => 19.8, 'original_price' => 119.8, 'coupon_price' => 100 ]; //直接输出 createSharePng($gData,'code_png/php_code.jpg'); //输出到图片 createSharePng($gData,'code_png/php_code.jpg','share.png');
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
Summary of how PHP obtains file extensions
How to make 360 search engines include PHP rewriting method
The above is the detailed content of PHP makes sharing pictures function. For more information, please follow other related articles on the PHP Chinese website!

The article explains how to create, implement, and use interfaces in PHP, focusing on their benefits for code organization and maintainability.

The article discusses the differences between crypt() and password_hash() in PHP for password hashing, focusing on their implementation, security, and suitability for modern web applications.

Article discusses preventing Cross-Site Scripting (XSS) in PHP through input validation, output encoding, and using tools like OWASP ESAPI and HTML Purifier.

Autoloading in PHP automatically loads class files when needed, improving performance by reducing memory use and enhancing code organization. Best practices include using PSR-4 and organizing code effectively.

PHP streams unify handling of resources like files, network sockets, and compression formats via a consistent API, abstracting complexity and enhancing code flexibility and efficiency.

The article discusses managing file upload sizes in PHP, focusing on the default limit of 2MB and how to increase it by modifying php.ini settings.

The article discusses nullable types in PHP, introduced in PHP 7.1, allowing variables or parameters to be either a specified type or null. It highlights benefits like improved readability, type safety, and explicit intent, and explains how to declar

The article discusses the differences between unset() and unlink() functions in programming, focusing on their purposes and use cases. Unset() removes variables from memory, while unlink() deletes files from the filesystem. Both are crucial for effec


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Notepad++7.3.1
Easy-to-use and free code editor

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
