在Javascript使用PHP运行后获取URL的内容（文本）

更新时间：2023-02-23 18:59:58

更新2 添加更多关于如何使用PHP中的 phantomjs

更新1 （在说明目标页面上的JavaScript需要先运行后）

方法1：使用 phantomjs （将执行javascript）;

1。下载 phantomjs ，并将可执行文件放在PHP二进制文件可以访问的路径中。

2。将以下2个文件放在同一目录中：

get-website.php

 <？php 

 $ phantom_script = dirname（__ FILE__）。 '/get-website.js'; 


 $ response = exec（'phantomjs'。$ phantom_script）; 

 echo htmlspecialchars（$ response）; 
？>

get-website.js

  var webPage = require（'webpage'）; 
 var page = webPage.create（）; 

 page.open（'http://google.com/'，function（status）{
 console.log（page.content）; 
 phantom.exit（） ; 
}）;

3。浏览至 get-website。 php ，目标网站， http://google.com 内容将在执行内联JavaScript后返回。您也可以使用 php /path/to/get-website.php 从命令行调用此方法。

方法2：使用Ajax与PHP（无phantomjs，因此不会运行javascript）;

/get-website.php

 <？php 

 $ html = file_get_contents（'http://google.com'）; 
 echo $ html; 
？>

test.html

 <！doctype html> 
< html lang =en> 
< head> 
< meta charset =utf-8> 
< title> on demo< / title> 
< style> 
 p {
 color：red; 
} 
 span {
 color：blue; 
} 
< / style> 
< script src =https://code.jquery.com/jquery-1.10.2.js>< / script> 
< / head> 
< body> 
< button id ='click_me'>点击我< / button> 
< span style =display：none;>< / span> 
< script> 

 $（#click_me）.click（function（）{
 $ .get（/ get-website.php，function（data）{
 var json = {
 html：JSON.stringify（data），
 delay：1 
}; 
 alert（json.html）; 
}）; 
 }）; 
< / script> 
< / body> 
< / html>

Is it possible to get the content of an URL with PHP (using some sort of function like file_get_contents or header) but only after the execution of some Javascript code?

Example:

mysite.com has a script that does loadUrlAfterJavascriptExec('http://exampletogetcontent.com/') and prints/echoes the content. imagine that some jQuery runs on http://exampletogetcontent.com/ that changes DOM, and loadUrlAfterJavascriptExec will get the resulting HTML

Can we do that?

@Edit

Not sure if I made myself clear, but what I wanted was to get the content of a page, through an URL, but only after Javascript run on the target page (the one PHP is getting its content)

I am aware PHP runs before the page is sent to the client, and JS only after that, but mabe there was an expert workaround

Update 2 Adds more details on how to use phantomjs from PHP.

Update 1 (after clarification that javascript on target page need to run first)

Method 1:Use phantomjs(will execute javascript);

1. Download phantomjs and place the executable in a path that your PHP binary can reach.

2. Place the following 2 files in the same directory:

get-website.php

<?php

    $phantom_script= dirname(__FILE__). '/get-website.js'; 


    $response =  exec ('phantomjs ' . $phantom_script);

    echo  htmlspecialchars($response);
    ?>

get-website.js

var webPage = require('webpage');
var page = webPage.create();

page.open('http://google.com/', function(status) {
 console.log(page.content);
  phantom.exit();
});

3. Browse to get-website.php and the target site, http://google.com contents will return after executing inline javascript. You can also call this from a command line using php /path/to/get-website.php.

Method 2:Use Ajax with PHP (No phantomjs so won't run javascript);