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PHP uses AJAX to obtain the webpage and output the implementation code (Zjmainstay)

Source: Internet
Author: User
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Aspect:
1. file_get_contents timeout control.
2. Page encoding judgment.
3. Press Enter to capture the response.
4. handle keyboard event compatibility. // Event = event | window. event;
5. XMLHttpRequest and jQuery implementation solutions.
6. The page and source code are displayed at the same time.
XMLHttpRequest version get_web.php
Copy codeThe Code is as follows:
<? 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 {
?>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Title> Get Web Page </title>
<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>
</Head>
<Body onkeydown = "get_key (event)">
<Div class = "div_box">
<Input id = "input_text" class = "input_box" type = "text" value = "" onclick = "check _ (true)" onblur = "check _ (false) "> </input>
<Input type = "button" class = "button_box" onclick = "get_page ()" value = "Get it! "> </Input>
<Div id = "click_show" class = "hide_box">
<A id = "origin_website" class = "a_box" href = "#" target = "_ black"> access the origin site </a>
<A id = "back_a" class = "a_box" href = "#"> back </a>
</Div>
</Div>
<Div class = "clear_box"> </div>
<Div id = "output_page"> </div>
</Body>
</Html>
<? Php
}
// End_php

JQuery version get_web.php
Copy codeThe Code is as follows:
<? 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 {
?>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Title> Get Web Page </title>
<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 () = ''){
$ ("# Input_text"). addClass ('errortids'). focus ();
Return false;
} Else {
$ ("# Input_text"). removeClass ('errortids ');
}
$. 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>
</Head>
<Body>
<Div class = "div_box">
<Input id = "input_text" class = "input_box" type = "text" value = ""> </input>
<Input type = "button" class = "button_box" value = "Get it! "> </Input>
<Div id = "click_show" class = "hide_box">
<A id = "origin_website" class = "a_box" href = "#" target = "_ black"> access the origin site </a>
<A id = "back_a" class = "a_box" href = "#"> back </a>
</Div>
</Div>
<Div class = "clear_box"> </div>
<Div class = "html_tips hide_box"> site </div>
<Div id = "output_page"> </div>
<Div class = "html_tips hide_box"> site source code </div>
<Textarea id = "output_page_html" class = "hide_box"> </textarea>
</Body>
</Html>
<? Php
}
// End_php

Author: Zjmainstay

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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