[英]Better Method to Create a file using Innert html
在這個項目中,當用戶提交論壇時,我將創建一個新文件。 該文件包含#main
div中的html結構。 請看我的代碼
<?php
if(ISSET($_POST['submit'])){
$myfile = fopen($_POST['user_name'].".html", "w") or die("Unable to open file!");
$txt = $_POST['inner_html'];
fwrite($myfile, $txt);
fclose($myfile);
}
?>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="main">
<div class="new-classs" style="color:green;width:100px">
<img src="tst.jpg" />
<span>Content of #main div goes here</span>
</div>
</div>
<form method="post" action="">
<input type="text" name="user_name" class="user_name" required>
<input type="hidden" name="inner_html" class="inner_html">
<input type="submit" value="submit" name="submit" class="submit">
</form>
<script>
$('.submit').on("click",function(e){
$(".inner_html").val($("#main").html());
});
</script>
我為此目的使用php和Jquery 。
但是這里的問題是#main div
包含太多內部html。
所以當作為$_POST
傳遞時將是一個問題?
$_POST
是否會限制該值(如果超過某個值)?
是否有其他替代方法或好的方法來解決此問題?
您可以考慮采用的一種方法,而不是實際嘗試發布大量數據,而只是將有問題的文檔/頁面的POST發布到PHP腳本,然后可以使用dom操作為您找到所需的內容。 這樣應該可以使請求變得非常快,並且不會對POST數據造成任何限制。
Ajax函數很容易被jQuery版本取代-我不使用jQuery。
表單中的按鈕不再以傳統意義提交表單,而是觸發ajax請求,該請求將頁面和用戶名詳細信息發送到后端php代碼。
<?php
if( $_SERVER['REQUEST_METHOD']=='POST' && isset( $_POST['username'], $_POST['page'] ) && !empty( $_POST['page'] ) ){
ob_clean();
$username=filter_input( INPUT_POST, 'username', FILTER_SANITIZE_STRING );
/* change path to suit environment */
$targetfile='c:/temp/'.$username.'.html';
libxml_use_internal_errors( true );
/* Load the current or selected page into a new DOMDocument */
$dom=new DOMDocument;
$dom->validateOnParse=false;
$dom->standalone=true;
$dom->strictErrorChecking=false;
$dom->recover=true;
$dom->loadHTMLFile( $_POST['page'] );
/* Find the element in the DOM to save */
$div = $dom->getElementById('main');
/* Save copy to this Document */
$doc=new DOMDocument;
/* Create a cloned copy of the DIV */
$clone=$div->cloneNode( true );
/* Add the clone to our new document */
$doc->appendChild( $doc->importNode( $clone, true ) );
/* write the cloned node innerHTML to file */
$bytes = file_put_contents( $targetfile, $doc->saveHTML() );
libxml_clear_errors();
$dom = $doc = null;
/* send some feedback to the client */
exit( 'Bytes written: '.$bytes.' to '.$targetfile );
}
?>
<!doctype html>
<html>
<head>
<title>Create File via AJAX & DOMDocument</title>
<script type='text/javascript'>
/* simple ajax function for post & get requests */
function ajax(m,u,p,c,o){
/*method,url,params,callback,options*/
var xhr=new XMLHttpRequest();
xhr.onreadystatechange=function(){
if( xhr.readyState==4 && xhr.status==200 )c.call( this, xhr.response, o, xhr.getAllResponseHeaders() );
};
var params=[];
for( var n in p )params.push(n+'='+p[n]);
switch( m.toLowerCase() ){
case 'post': p=params.join('&'); break;
case 'get': u+='?'+params.join('&'); p=null; break;
}
xhr.open( m.toUpperCase(), u, true );
xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
xhr.send( p );
}
/* Add event listener to the button */
document.addEventListener('DOMContentLoaded',function(e){
document.getElementById('btn').addEventListener('click',function(e){
var username=document.getElementById('usr').value;
if( username!='' ){
ajax.call( this, 'post', location.href, { page:location.href, username:username }, function(r){
alert(r)
}, null );
}
},false);
},false);
</script>
</head>
<body>
<div id='main'>
<div class='new-classs' style='color:green;width:100px'>
<img src='/images/tarpit.png' />
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<span>Content of #main div goes here</span>
<h2>more content...</h2>
<!-- lots and lots of contents -->
</div>
</div>
<form method='post'>
<input id='usr' type='text' name='user_name' class='user_name' required>
<input id='btn' type='button' value='submit' name='submit' class='submit'>
</form>
</body>
</html>
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