PHP 将网页转图片

2021/6/15 12:21:19

编程Tag： 图片网页 options php IM text filename PATH com

本文主要是介绍PHP 将网页转图片，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

如果常用微博的话可以发现有个长微博工具，可以将一段文字转成图片，然后发在微博上，比如锤子，长微博工具 www.changweibo.com

这里以 PHP 为例，使用 PHP 来对页面截图。

一个 demo

error_reporting(7);
define('ROOT', getcwd());
define('BASEDIR', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
if ($_POST['text']) {
$ret = array();
$text = $_POST['text'];
try {
$ret['imgurl'] = text2img($text, (array) $_REQUEST['config']);
}
catch (Exception $e) {
$ret['imgurl'] = print_r($e, true);
}
echo str_replace('\\/', '/', json_encode($ret));
exit(0);
}
function text2img($text, $options = array())
{
//http://yuncode.net/code/c_51dd01a4d547f26
$rows = substr_count($text, "\n") + 1;
$font_path = $options['fontfile'] ? $options['fontfile'] : ROOT . '/simhei.ttf';//cp /c/Windows/Fonts/simhei.ttf .
if (!file_exists($font_path))
throw new Exception(" 找不到字体文件：$font_path ");
$font_size = $options['fontsize'] ? $options['fontsize'] : 12;
$padding = $options['padding'] ? $options['padding'] : 30;
$row_plus_height = $options['row_plus_height'] ? $options['row_plus_height'] : 4;
$border = 1;
$im_width = 430;
$im_height = ($row_plus_height + ($font_size * 4) / 3) * $rows + ($padding + $border) * 2;
$im = @imagecreatetruecolor($im_width, $im_height);
if (!$im)
throw new Exception("初始化图片失败，请检查 GD 配置");
imagefilledrectangle($im, $border, $border, ($im_width - 2 * $border), ($im_height - 2 * $border), imagecolorallocate($im, 255, 255, 255));
imagettftext($im, $font_size, 0, ($border + $padding), (($font_size * 4) / 3 + $border + $padding), imagecolorallocate($im, 0, 0, 0), $font_path, $text);
$base_path = '/files';
$base_filename = date("Y-m-d,H-i-s") . '.png';
$short_filename = $base_path . '/' . $base_filename;
$short_url = rtrim(BASEDIR, '/') . $short_filename;
@mkdir(ROOT . $base_path, 0777, true);
$filename = ROOT . $short_filename;
if (!imagepng($im, $filename)) {
throw new Exception("创建图片时出错。");
}
@imagedestroy($im);
return $short_url;
}
?>
<!DOCTYPE HTML><html><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>长微博工具</title>
<script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.6.2/jquery.min.js"></script>
</head>
<body>
<h1>长微博工具</h1>
<p><textarea name="text" id="text" rows="20" cols="60"></textarea></p>
<pre id="pre"></pre>
<p><a target="_blank" href="" id="url"></a></p>
<p><input type="button" id="format" value="格式化" /><input type="button" id="button" value="生成长微博" /> <br/><br/><br/><br/> <a href="http://changweibo.debake.com/" style="font-size:9px; color:#666; text-decoration:none">长微博</a></p>
<script type="text/javascript">
BIG_FONT_WIDTH = 44;
function f(v,w,c){
c = 0;
w = w || BIG_FONT_WIDTH;
return v.replace(/[\S\s]/g,function(a){
if(/[\r\n]/.test(a)) {
c = -2;
return "\r\n";
}
c += /[\x00-\xFF]/.test(a) ? 1 : 2;
if(c>=w){
c = 0;
return "\r\n"+a;
}
return a;
});
}
$(function(){
$("#format").click(function(){$("#text").val(f($("#text").val()));});
$("#button").click(function(){
if($("#text").val().length<1){
alert("无内容");
} else {
$.ajax({
type:"POST",
url:location.pathname,
data:"text="+$("#text").val(),
dataType:"json",
success:function(m){
if(m.message)$("#pre").innerHTML(m.message);
if(m.imgurl)$("#url").attr("href", m.imgurl).text(m.imgurl);
}
});
}
});
});
</script>
</body>
</html>

text2pic

composer require dsgygb/text2pic
touch test.php
<?php
require 'vendor/autoload.php';
$transform = new Text2pic\Transform('by text2pic');
$result = $transform->generate("hello world");
print_r($result);
#中文字体路径 /c/windows/fonts/sihei.ttf
$transform=new Text2pic\Transform($by,$uploadsPath,$uploadsUrl,$fontPath);

wkhtmltopdf

地址 https://wkhtmltopdf.org/downloads.html 下载后有 2 个工具 wkhtmltoimage 和 wkhtmltopdf 分别是将网页转图片和pdf 的,具体使用参考 http://blog.csdn.net/qq_14873105/article/details/51394026

#生成图片 https://gist.github.com/vibbow/5702882
wkhtmltoimage http://www.baidu.com/ baidu.jpg
#php 调用使用绝对路径
$r=shell_exec("/user/bin/wkhtmltoimage http://www.baidu.com/ baidu.jpg");
$r=shell_exec("/user/bin/wkhtmltoimage -q {$filename}.html {$filename}.jpg");

phpwkhtmltopdf

composer require mikehaertl/phpwkhtmltopdf
require './vendor/autoload.php';
use mikehaertl\wkhtmlto\Image;
// You can pass a filename, a HTML string, an URL or an options array to the constructor
$image = new Image('/path/to/page.html');
$image->saveAs('/path/to/page.png');//保存
// ... or send to client for inline display
$image->send();//浏览器显示
// ... or send to client as file download
$image->send('page.png');//浏览器显示并下载
#另外一个库https://github.com/knplabs/snappy
use Knp\Snappy\Pdf as newpdf;
$snappy = new newpdf('wkhtmltopdf');
header('Content-Type: application/pdf');
header('Content-Disposition: attachment; filename="file.pdf"');
// echo $snappy->getOutput('http://www.github.com');
$snappy->generateFromHtml('<h1>Bill</h1><p>You owe me money, dude.</p>', 'bill-123.pdf');

小人举牌图片生成 https://github.com/jokin1999/HoldUpSign
网页保存为图片及高清截图的优化https://segmentfault.com/a/1190000011425316
https://stackoverflow.com/questions/5663814/how-do-i-get-wkhtmltopdf-to-execute-via-php http://www.jianshu.com/p/4d65857ffe5e

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PHP 将网页转图片

一个 demo

text2pic

wkhtmltopdf

phpwkhtmltopdf

more

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