php file_get_contents() reads and collects remote file contents_PHP tutorial

Let’s look at the PHP manual about the file_get_contents() function that reads the entire file into a string. It is the same as file(). The difference is that file_get_contents() reads the file into a string.

The file_get_contents() function is the preferred method for reading the contents of a file into a string

The above is a help manual that reads all the contents into the memory at one time. We will also talk about the following examples

_get_contents can read the remote file into a string,
The file line separation is "rn"
explode separates strings by "rn"

The code is as follows

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$shadu_url = "http://localhost/ demo.html";

代码如下	复制代码
$shadu_url = "http://localhost/demo.html"; $shadu_str = file_get_contents($shadu_url); $line_arr  = explode("rn",$shadu_str);

$shadu_str = file_get_contents($shadu_url);

$line_arr = explode("rn",$shadu_str);

Remote request address, the returned processing result information is a string, each field is separated by ‘|’, and rows are separated by ‘rn’ The content returned respectively is, id, name, time, email

Content example
1|simaopig|2009-04-01|demo@simaopig.com
2|xiaoxiaozi|2009-04-02|demo@xiaoxiaozi.com

If I want to get each field, do the following

代码如下

复制代码

$shadu_url = "http://localhost/demo.html"; $shadu_str = file_get_contents($shadu_url); $line_arr  = explode("rn",$shadu_str); $result = array(); if(empty($line_arr)) { return array(); } foreach($line_arr as $line_str) { $record_arr = explode("|",$line_str); if($record_arr[0] == "-1") { // log continue; } $data = array(); $data['id'] = $record_arr[0]; $data['name'] = $record_arr[1]; $data['time'] = $record_arr[2]; $data['email'] = $record_arr[3]; $result[] = $data; } var_dump($result);

The code is as follows

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$shadu_url = "http://localhost/ demo.html"; $shadu_str = file_get_contents($shadu_url); $line_arr = explode("rn",$shadu_str); $result = array(); if(empty($line_arr)) { return array(); } foreach($line_arr as $line_str) { $record_arr = explode("|",$line_str); if($record_arr[0] == "-1") { // log continue; } $data = array(); $data['id'] = $record_arr[0]; $data['name'] = $record_arr[1]; $data['time'] = $record_arr[2]; $data['email'] = $record_arr[3]; $result[] = $data; } var_dump($result);

Check the results yourself, haha.

Example 2

Collect the content of html page

代码如下

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//全国，判断条件是$REQUEST_URI是否含有html if (!strpos($_SERVER["REQUEST_URI"],".html")) { $page="http://qq.ip138.com/weather/"; $html = file_get_contents($page,'r'); $pattern="/全国主要城市、县当天和未来五天天气趋势预报在线查询(.*?)/si"; //正则匹配之间的html preg_match($pattern,$html,$pg); echo ""; //正则替换远程地址为本地地址 $p=preg_replace('//weather/(w+)/index.htm/', 'tq.php/.html', $pg[1]); echo $p; } //省，判断条件是$REQUEST_URI是否含有？ else if(!strpos($_SERVER["REQUEST_URI"],"?")){ //yoyo推荐的使用分割获得数据，这里是获得省份名称 $province=explode("/",$_SERVER["REQUEST_URI"]); $province=explode(".",$province[count($province)-1]); $province=$province[0]; //被注释掉的是我自己写出来的正则，感觉写的不好，但效果等同上面 //preg_match('/[^/]+[.(html)]$/',$_SERVER["REQUEST_URI"],$pro); //$province=preg_replace('/.html/','',$pro[0]); $page="http://qq.ip138.com/weather/".$province."/index.htm"; //获取html数据之前先尝试打开页面，防止恶意输入地址导致出错 if (!@fopen($page, "r")) { die("对不起，该地址不存在!点击这里返回"); exit(0); } $html = file_get_contents($page,'r'); $pattern="/五天天气趋势预报(.*?)请输入输入市/si"; preg_match($pattern,$html,$pg); echo ""; //正则替换，获取省份，城市 $p=preg_replace('//weather/(w+)/(w+).htm/', '.html?pro=', $pg[1]); echo $p; } else { //市，通过get传递省份 $pro=$_REQUEST['pro']; $city=explode("/",$_SERVER["REQUEST_URI"]); $city=explode(".",$city[count($city)-1]); $city=$city[0]; //preg_match('/[^/]+[.(html)]+[?]/',$_SERVER["REQUEST_URI"],$cit); //$city=preg_replace('/.html?/','',$cit[0]); $page="http://qq.ip138.com/weather/".$pro."/".$city.".htm"; if (!@fopen($page, "r")) { die("对不起，该地址不存在!点击这里返回"); exit(0); } $html = file_get_contents($page,'r'); $pattern="/五天天气趋势预报(.*?)请输入输入市/si"; preg_match($pattern,$html,$pg); echo ""; //获取真实的图片地址 $p=preg_replace('//image//', 'http://qq.ip138.com/image/', $pg[1]); echo $p; } ?>

http://www.bkjia.com/PHPjc/629097.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629097.htmlTechArticleLet’s look at the PHP manual about the file_get_contents() function that reads the entire file into a string and file() The same, except that file_get_contents() reads the file into a string. ...