Home php教程 php手册 php中通过正则表达式下载内容中的远程图片的函数代码

php中通过正则表达式下载内容中的远程图片的函数代码

Jun 06, 2016 pm 08:39 PM
regular expression remote picture

下午抽空写了个用PHP正则表达式判断内容中的图片,下载并保存非本域名下的图片的程序

这段程序其实是属于“小偷程序”的重要部分。 这一段程序只是下载远程图片的那一段而已,程序写的比较简单,大多部分都做了注释。
代码如下:
if (preg_match_all("/http://[^ "']+[.jpg|.gif|.jpeg|.png]+/ui",stripcslashes($content),$aliurl)){
$i=0; //多个文件++
while(list($key ,$v) = each($aliurl[0])){
//echo $v."
";
$filetype = pathinfo($v, PATHINFO_EXTENSION); //获取后缀名
$ff = @file_get_contents($v); //获取2进制文件内容
if(!stripos($v,"jb51.net")){//判断是否是自己网站下的图片
if (!empty($ff)){ //获取到文件就执行下面的操作
$dir = "upload/".date("Ymd")."/";//指定新的存储路径
if (!file_exists($dir)){//判断目录是否存在
@mkdir($dir,511,true); //创建多级目录,511转换成十进制是777具有可执行权限
}
$nfn = $dir.date("Ymdhis").$i.".".$filetype; //构建文件的新名字
$nf = @fopen($nfn,"w"); //创建文件
fwrite($nf,$ff); //写入文件
fclose($nf); //关闭文件
$i++; //多文件++
echo "php中通过正则表达式下载内容中的远程图片的函数代码";
$content = str_replace($v,$nfn, $content);//替换content中的参数
}else{//获取不到图片则替换为默认图片
$content = str_replace($v,"/upload/201204/20120417213810742.gif", $content);//替换content中的参数
}
}
}
}

PHP通过正则表达式下载图片到本地的实现代码
代码如下:
/*
author: ssh_kobe
date: 20110602
shortage: 如果网页中的图片路径不是绝对路径,就无法抓取
*/
set_time_limit(0);//抓取不受时间限制

$URL='http://pp.baidu.com/';//任意网址

get_pic($URL);

function get_pic($pic_url) {
//获取图片二进制流
$data=CurlGet($pic_url);
/*利用正则表达式得到图片链接*/
$pattern_src = '//';
$num = preg_match_all($pattern_src, $data, $match_src);
$arr_src=$match_src[1];//获得图片数组
get_name($arr_src);

echo "
finished!!!";
return 0;
}

/*得到图片类型,并将其保存到与该文件同一目录*/
function get_name($pic_arr)
{
//图片类型
$pattern_type = '/(/.(jpg|bmp|jpeg|gif|png))/';

foreach($pic_arr as $pic_item){//循环取出每幅图的地址
$num = preg_match_all($pattern_type, $pic_item, $match_type);
$pic_name = get_unique().$match_type[1][0];//改时微秒时间戳命名
//以流的形式保存图片
$write_fd = @fopen($pic_name,"wb");
@fwrite($write_fd, CurlGet($pic_item));
@fclose($write_fd);
echo "[OK]..!";
}
return 0;
}

//通过微秒时间获得唯一ID
function get_unique(){
list($msec, $sec) = explode(" ",microtime());
return $sec.intval($msec*1000000);
}

//抓取网页内容
function CurlGet($url){
$url=str_replace('&','&',$url);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, false);

//curl_setopt($curl, CURLOPT_REFERER,$url);
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; SeaPort/1.2; Windows NT 5.1; SV1; InfoPath.2)");
curl_setopt($curl, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($curl, CURLOPT_COOKIEFILE, 'cookie.txt');
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 0);
$values = curl_exec($curl);
curl_close($curl);
return $values;
}
?>
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP regular expression validation: number format detection PHP regular expression validation: number format detection Mar 21, 2024 am 09:45 AM

PHP regular expression verification: Number format detection When writing PHP programs, it is often necessary to verify the data entered by the user. One of the common verifications is to check whether the data conforms to the specified number format. In PHP, you can use regular expressions to achieve this kind of validation. This article will introduce how to use PHP regular expressions to verify number formats and provide specific code examples. First, let’s look at common number format validation requirements: Integers: only contain numbers 0-9, can start with a plus or minus sign, and do not contain decimal points. floating point

How to validate email address in Golang using regular expression? How to validate email address in Golang using regular expression? May 31, 2024 pm 01:04 PM

To validate email addresses in Golang using regular expressions, follow these steps: Use regexp.MustCompile to create a regular expression pattern that matches valid email address formats. Use the MatchString function to check whether a string matches a pattern. This pattern covers most valid email address formats, including: Local usernames can contain letters, numbers, and special characters: !.#$%&'*+/=?^_{|}~-`Domain names must contain at least One letter, followed by letters, numbers, or hyphens. The top-level domain (TLD) cannot be longer than 63 characters.

How to match timestamps using regular expressions in Go? How to match timestamps using regular expressions in Go? Jun 02, 2024 am 09:00 AM

In Go, you can use regular expressions to match timestamps: compile a regular expression string, such as the one used to match ISO8601 timestamps: ^\d{4}-\d{2}-\d{2}T \d{2}:\d{2}:\d{2}(\.\d+)?(Z|[+-][0-9]{2}:[0-9]{2})$ . Use the regexp.MatchString function to check if a string matches a regular expression.

Master regular expressions and string processing in Go language Master regular expressions and string processing in Go language Nov 30, 2023 am 09:54 AM

As a modern programming language, Go language provides powerful regular expressions and string processing functions, allowing developers to process string data more efficiently. It is very important for developers to master regular expressions and string processing in Go language. This article will introduce in detail the basic concepts and usage of regular expressions in Go language, and how to use Go language to process strings. 1. Regular expressions Regular expressions are a tool used to describe string patterns. They can easily implement operations such as string matching, search, and replacement.

PHP regular expressions: exact matching and exclusion of fuzzy inclusions PHP regular expressions: exact matching and exclusion of fuzzy inclusions Feb 28, 2024 pm 01:03 PM

PHP Regular Expressions: Exact Matching and Exclusion Fuzzy inclusion regular expressions are a powerful text matching tool that can help programmers perform efficient search, replacement and filtering when processing text. In PHP, regular expressions are also widely used in string processing and data matching. This article will focus on how to perform exact matching and exclude fuzzy inclusion operations in PHP, and will illustrate it with specific code examples. Exact match Exact match means matching only strings that meet the exact condition, not any variations or extra words.

How to verify password using regular expression in Go? How to verify password using regular expression in Go? Jun 02, 2024 pm 07:31 PM

The method of using regular expressions to verify passwords in Go is as follows: Define a regular expression pattern that meets the minimum password requirements: at least 8 characters, including lowercase letters, uppercase letters, numbers, and special characters. Compile regular expression patterns using the MustCompile function from the regexp package. Use the MatchString method to test whether the input string matches a regular expression pattern.

Chinese character filtering: PHP regular expression practice Chinese character filtering: PHP regular expression practice Mar 24, 2024 pm 04:48 PM

PHP is a widely used programming language, especially popular in the field of web development. In the process of web development, we often encounter the need to filter and verify text input by users, among which character filtering is a very important operation. This article will introduce how to use regular expressions in PHP to implement Chinese character filtering, and give specific code examples. First of all, we need to clarify that the Unicode range of Chinese characters is from u4e00 to u9fa5, that is, all Chinese characters are in this range.

What are the regular expression wildcards? What are the regular expression wildcards? Nov 17, 2023 pm 01:40 PM

Regular expression wildcards include ".", "*", "+", "?", "^", "$", "[]", "[^]", "[a-z]", "[A-Z] ","[0-9]","\d","\D","\w","\W","\s&quo

See all articles