Ajax
看点：
1、file_get_contents超时控制。
2、页面编码判断。
3、键盘Enter键捕捉响应。
4、键盘event兼容处理。//event = event || window.event;
5、XMLHttpRequest 和 jQuery 两种实现方案。
6、页面及源码同时展示。
XMLHttpRequest版本 get_web.php
复制代码 代码如下:
<?php
header(“Content-type: text/html; charset=utf-8”);
if(!empty($_POST[‘input_text’])) {
ini_set(‘default_socket_timeout’, 10);
if(!$data = file_get_contents($_POST[‘input_text’])) {
echo “Time out!”;
return ;
}
$charset_pos = stripos($data,’charset’);
if($charset_pos) {
if(stripos($data,’utf-8′,$charset_pos)) {
echo iconv(‘utf-8′,’utf-8’,$data);
}else if(stripos($data,’gb2312′,$charset_pos)) {
echo iconv(‘gb2312′,’utf-8’,$data);
}else if(stripos($data,’gbk’,$charset_pos)) {
echo iconv(‘gbk’,’utf-8′,$data);
}
return;
}
echo $data;
}else {
?>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<meta http-equiv=”Content-Language” content=”zh-CN” />
<script type=”text/javascript”>
function createXMLHTTP()
{
try
{
var request = new XMLHttpRequest();
}
catch(e1)
{
var arrVersions = [“Microsoft.XMLHTTP”,”MSXML2.XMLHttp.4.0″,
“MSXML2.XMLHttp.3.0″,”MSXML2.XMLHttp.5.0”];
for(var i=0;i < arrVersions.length;i++){
try{
request = new ActiveXObject(arrVersions[i]);
}catch(e2){
request = false;
}
}
}
return request;
}
function ajax_post(url, params, target_id)
{
request = new createXMLHTTP();
request.onreadystatechange = function() {
if (this.readyState == 4)
if (this.status == 200)
if (this.responseText != null)
document.getElementById(target_id).innerHTML = this.responseText;
}
request.open(“POST”, url, true);
request.setRequestHeader(“Content-type”, “application/x-www-form-urlencoded”);
request.setRequestHeader(“Content-length”, params.length);
request.setRequestHeader(“Connection”, “close”);
request.send(params);
}
var checked = false;
function check_(value) {
checked = value;
}
function get_key(event) {
event = event || window.event;
if(event.keyCode==13 && checked != false)
{
var url = document.getElementById(‘input_text’).value;
if(url != ”) {
get_page();
}else {
document.getElementById(‘input_text’).onfocus();
return false;
}
}
}
function get_page() {
var url = document.getElementById(‘input_text’).value;
if(!url) {
return false;
}else {
if(document.getElementById(‘output_page’).innerHTML != ”) {
document.getElementById(‘output_page’).innerHTML = ”;
}
}
if(url.indexOf(‘http://’
== -1) { url = ‘http://’+url;
}
ajax_post(
‘<?php echo $_SERVER[‘PHP_SELF’]; ?>’,
‘input_text=’+url,
‘output_page’
);
document.getElementById(‘click_show’).style.display = ‘block’;
document.getElementById(‘back_a’).href = document.location.href;
document.getElementById(‘origin_website’).href = url;
}
</script>
<style>
.div_box{
margin-top:10px;
}
.input_box{
border:1px solid;
margin-left:10px;
margin-top:2px;
height:15px;
float:left;
size:32
font-size: 14px;
}
.button_box{
float:left;
height:23px;
padding-bottom:3px;
}
.hide_box{
display:none;
}
.a_box{
margin-left:10px;
margin-top:3px;
height:15px;
float:left;
font-size: 14px;
}
.clear_box{
height:50px;
}
</style>
<body onkeydown=”get_key(event)”>
访问原站
后退
<?php
}
//End_php
jQuery 版本 get_web.php
复制代码 代码如下:
<?php
header(“Content-type: text/html; charset=utf-8”);
if(!empty($_POST[‘input_text’])) {
ini_set(‘default_socket_timeout’, 10);
if(!$data = file_get_contents($_POST[‘input_text’])) {
echo “Time out!”;
return ;
}
$charset_pos = stripos($data,’charset’);
if($charset_pos) {
if(stripos($data,’utf-8′,$charset_pos)) {
echo iconv(‘utf-8′,’utf-8’,$data);
}else if(stripos($data,’gb2312′,$charset_pos)) {
echo iconv(‘gb2312′,’utf-8’,$data);
}else if(stripos($data,’gbk’,$charset_pos)) {
echo iconv(‘gbk’,’utf-8′,$data);
}
return;
}
echo $data;
}else {
?>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<meta http-equiv=”Content-Language” content=”zh-CN” />
<script type=”text/javascript” src=”http://files.cnblogs.com/Zjmainstay/jquery-1.6.2.min.js”></script>
<script type=”text/javascript”>
$(document).ready(function(){
$(document).keyup(function(e){
e = e || window.event;
if(e.keyCode == 13 && $(“#input_text”).val() != ”) {
$(“.button_box”).click();
}
});
$(“.button_box”).click(function(){
if($(“#input_text”).val() @本文来源gaodai$ma#com搞$代*码6网搞代gaodaima码== ”) {
$(“#input_text”).addClass(‘errorTips’).focus();
return false;
}else {
$(“#input_text”).removeClass(‘errorTips’);
}
$.ajax({
url: ‘<?php echo $_SERVER[‘PHP_SELF’] ?>’,
data: ‘input_text=’+$(“#input_text”).val(),
type:’POST’,
success:function(msg){
$(“.html_tips”).show();
$(“#origin_website”).attr(‘href’,$(“#input_text”).val());
$(“#back_a”).attr(‘href’,document.location.href);
$(“#click_show”).show();
$(“#output_page_html”).empty().val(msg).css({height:parseInt($(document).height()-100)}).show();
$(“#output_page”).empty().html(msg).show();
}
});
});
});
</script>
<style>
.div_box{
margin-top:10px;
}
.input_box{
border:1px solid;
margin-left:10px;
margin-top:2px;
height:15px;
float:left;
size:32
font-size: 14px;
}
.button_box{
float:left;
height:23px;
padding-bottom:3px;
}
.hide_box{
display:none;
}
.a_box{
margin-left:10px;
margin-top:3px;
height:15px;
float:left;
font-size: 14px;
}
.clear_box{
height:50px;
}
.error_tips{
border:1px solid red;
}
#output_page_html{
width:960px;
margin:0 auto;
}
.html_tips{
float: left;
margin: 0 21px;
font-size:1.8em;
}
</style>
<body>
访问原站
后退
<?php
}
//End_php
作者：Zjmainstay
转载请注明原文链接：PHP 利用AJAX获取网页并输出的实现代码(Zjmainstay)_PHP
