PHP simple thief program

Thief program: Catch the data (pictures, web pages and other files) on the remote website to the local, and then display it after processing
Regular expressions: Used for pattern segmentation, matching, and search of strings and replacement operations.

Related functions:

int ereg(string $pattern, string $string[, array &$regs] )

If the parameter is omitted and the returned array is found, the return value is True otherwise it returns False

Correspondingly, eregi() is not case-sensitive.

string file_get_contents(string $filename[, bool $use_include_path= false[,resource $context[,int $offset= 0[,int $maxlen]]]] )

Read the entire file, such as:

Use this function to obtain web page information

It is the basis of the thief program.

For example:

$url=file_get_contents("http://www.ubuntu.org.cn/index_kylin");

echo $url;

?>

But for another website:

$url=file_get_contents("http://www.alangzhong.com/index.html");

echo $url;

?>

I found that many background images are invisible.

Looking at the source code of the web page, we found that this is

src="/upload/201503/b123ec26-bb8f-43be-b5ad-cdf45153d053. png"/>

The address of the image uses a relative path, and we do not have such a file locally, so of course it cannot be displayed.

Use a regular expression to select the image, and then replace the relative path with the remote address:

The timeout problem of the following code has not been resolved.

<?php
//ini_set(&#39;max_execution_time&#39;, &#39;0&#39;);   //三者都没用啊，一直超时
//@ini_set(&#39;default_socket_timeout&#39;, 20000);
//set_time_limit(2); 
$url=file_get_contents("http://www.alangzhong.com/index.html");
//echo $url;
$fp = @fopen($url, "r") or die("超时");  //为什么不断超时
$contents = file_get_contents($url);
eregi("<img width=\"116\" height=\"98\" src=\"/upload/201503/b123ec26-bb8f-43be-b5ad-cdf45153d053.png\"/>",$contents,$rg);
//  远程地址替换相对路径
$rg[1]=str_replace("src=\"../upload/","src=\"http://www.alangzhong.com/index.html/upload/",$rg[1]);

echo $rg[1];
?>

The above introduces the simple thief program in PHP, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.