PHP中get_headers函数使用方法解析

 百家乐-前端     |      2020-03-31 10:04

get_headers(卡塔尔国 是PHP系统级函数,他重回一个包涵有服务器响应叁个 HTTP 乞请所发送的标头的数组。如若战败则赶回 FALSE 并发出一条 E_WA昂CoraNING 品级的错误新闻(可用来推断远程文件是还是不是存在卡塔尔国。

示例

在PHP开荒中,大家平时索要得到HTTP乞求中发送的服务器新闻,本文通过一个大约的PHP示例介绍了经过get_headers函数获取服务器的相关音信。

函数定义

参数

url 目标 URL

format 假设将可选的 format 参数设为 1,则 get_headers()会解析相应的音信并设定数组的键名。

示例

<?php
$url='http://www.phpernote.com';
print_r(get_headers($url));
print_r(get_headers($url,1));
?>

上述例程的出口相近于:

Array
(
    [0] => HTTP/1.1 200 OK
    [1] => Date: Sat, 29 May 2004 12:28:13 GMT
    [2] => Server: Apache/1.3.27 (Unix)  (Red-Hat/Linux)
    [3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
    [4] => ETag: "3f80f-1b6-3e1cb03b"
    [5] => Accept-Ranges: bytes
    [6] => Content-Length: 438
    [7] => Connection: close
    [8] => Content-Type: text/html
)
Array
(
    [0] => HTTP/1.1 200 OK
    [Date] => Sat, 29 May 2004 12:28:14 GMT
    [Server] => Apache/1.3.27 (Unix)  (Red-Hat/Linux)
    [Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT
    [ETag] => "3f80f-1b6-3e1cb03b"
    [Accept-Ranges] => bytes
    [Content-Length] => 438
    [Connection] => close
    [Content-Type] => text/html
)

参数

函数定义

array get_headers ( string $url [, int $format = 0 ]百家了乐八大技巧 , )

lom599乐百家手机 ,如上例程的出口临近于:

Array( [0] => HTTP/1.1 200 OK [1] => Date: Sat, 29 May 2004 12:28:13 GMT [2] => Server: Apache/1.3.27 [3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT [4] => ETag: "3f80f-1b6-3e1cb03b" [5] => Accept-Ranges: bytes [6] => Content-Length: 438 [7] => Connection: close [8] => Content-Type: text/html)