PHP file_get_contents函数详解「建议收藏」-file_get_contents获取网页

PHP file_get_contents函数详解「建议收藏」一.file_get_contents(path,include_path,context,start,max_length)参数描述path必需。规定要读取的文件。include_path可选。如果也想在include_path…_file_get_contents

一. file_get_contents(path,include_path,context,start,max_length)

网页抓取
　　一般用file_get_contents或者fopen, file , readfile等函数读取url的时候 会创建一个$http_response_header变量保存HTTP响应的报头,使用fopen等函数打开的数据流信息可以用stream_get_meta_data获取

$html = file_get_contents('http://www.baidu.com');print_r($http_response_header);$fp = fopen('http://www.baidu.com', 'r');print_r(stream_get_meta_data($fp));fclose($fp);

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模拟post请求

test.php 　　```php$url = 'http://192.168.31.63/2.php';$data = array(    'item' => 'test data',);$content = http_build_query($data);$content_length = strlen($content);$options = array(    'http' => array(        'method' => 'POST',        'header' =>        "Content-type: application/x-www-form-urlencoded\r\n" .        "Content-length: $content_length\r\n",        'content' => $content    ));echo file_get_contents($url, false, stream_context_create($options)); 2.php<?php/** * @Author: anchen * @Date: 2017-03-23 13:51:46 * @Last Modified by: anchen * @Last Modified time: 2017-03-23 13:53:46 */file_put_contents('./1.txt', var_export($_POST, true));//把接收的数据储存起来 下面写一个贴近一点的例子$data = [    'author' => '白菜打下',    'mail' => 'info@aiyooyoo.com',    'text' => '博主很给力',];$data = http_build_query($data);$opts = [    'http' => [        'method' => 'POST',        'header' => "Content-type:application/x-www-form-urlencoded\r\n".                    "Content-Length: ".strlen($data)."\r\n".                    "Cookie: PHPSESSID=13ROTEGFGJDFDFDOGDFGD"."\r\n".                    "User-Agent: Mozilla/5.0(Windows: U; Windows NT 6.1; zh-CH; rv: 1.9.2.13) Gecko/20101203 Firefox/3.6.13"."\r\n".                    "Referer:http://aiyooyoo.com/index.php/archives/7/"."\r\n",        'content' => $data,    ],];$context = stream_context_create($opts);$html = @file_get_contents('http://aiyooyoo.com/index.php/archives/7/comment', false, $context);