I have studied some AJAX, and tried to understand it.
The AJAX works; i just want to write a right php document too. With the AJAX, I load the php file write.php. Here is what is in write.php:
<?php
$NAME = 'data.txt';
$HANDLE = fopen($NAME, 'w') or die ('CANT OPEN FILE');
fwrite($HANDLE,'1');
fclose($HANDLE);
?>But how to choose what to write, instead of '1', with JavaScript? Like Having a variable in JavaScript with the content, and loading that content into the php file?:?:
Thanks!
Hi,
here's a simple demo that will help you to accomplish your task.
this demo comes with 2 documents:
test.php
<?php
echo '<?xml version="1.0" encoding="UTF-8" standalone="no"?>';
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://w3.org/TR/xhtm1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="EmulateIE6" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Cache-Control" content="no-cache" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<title>Javascript to PHP Example:: by essential</title>
<script type="text/javascript">
// <![CDATA[
var update = ( function() {
if ( { 4: 4, complete : 4 }[ this.readyState ] ) { // AJAX callback function
if ( this.status === 200 ) { // Let them know that the data has been written on the .txt file >>>
alert( "Your data has been saved!" );
if ( this.responseText ) {
var data = String( this.responseText ).split(/\n/);
var len = data.length;
var container = document.getElementById( "loadInfo" ) || document.all.loadInfo;
var txt = "";
for ( var x = 0; x < len; ++x ) {
if ( data[ x ] ) {
txt += data[ x ] + "<br />";
continue;
}
} container.innerHTML = '<h3>AJAX Generated Content</h3><br />' + txt;
// Do nothing: you can provide more lines below if you still need to do something asside from writing to the .txt file and reading its data
return;
}
}
}
} );
var createRequest = ( function() { // Building request object >>>
var xhr = 0;
try {
try {
if ( "XMLHttpRequest" in window ) {
xhr = new XMLHttpRequest();
} else { // Handles all major browser, exept IE >>>
var PID = [
"MSXML2.XMLHTTP.6.0",
"MSXML2.XMLHTTP.5.0",
"MSXML2.XMLHTTP.4.0",
"MSXML2.XMLHTTP.3.0",
"MSXML2.XMLHTTP.2.0",
"Microsoft.XMLHTTP" ];
var len = PID.length;
for ( var x = 0; x < len; ++x ) { // Instance that will invoke IE browser to respond on the client request >>>
if (( xhr = new ActiveXObject( PID[ x ] ))) {
break;
}
}
}
} catch( e1 ) { // for some other browser's that do not understand the two types of calls above
xhr = window.createRequest();
}
} catch( e ) { // invocation failed [EXIT FUNCTION]
xhr = 0;
} return xhr;
} );
var senData = function( arg ) {
var req = createRequest();
if ( req ) {
var obj = ( function( IDS ) {
return IDS = document.getElementById( IDS ) || (( typeof IDS === "string" ) ? document.all[ IDS ] : document.all.IDS );
} );
var uname = obj( "names" ).value || "Created Name in varible ( uname )";
var pword = obj( "password" ).value || "GeneratedPassword";
var url = arg + "?names=" + uname + "&password=" + pword;
(( "overrideMimeType" in req ) ? req.overrideMimeType("text/xml") : null );
req.onreadystatechange = update;
req.open( "GET", url, 1 );
(( req.setRequestHeader ) ? req.setRequestHeader("Content-type", "application/www-x-form-urlencoded; UTF-8") : req );
req.send( null );
}
/* prevent the form on getting submitted when we invoke AJAX call from the ONSUBMIT handler */ return false;
};
// ]]>
</script>
<style type="text/css" media="all">
/* <![CDATA[ */
html, body {
font: normal normal normal 95%/1.5 Tahoma, Verdana, Arial, sans-serif;
color: #555;
margin: 0;
padding: 0;
border: none;
text-align: center;
width: auto;
height: auto;
vertical-align: baseline;
}
div, form {
padding: 0;
margin: 0;
border: none;
}
form[id] {
margin: 0 auto;
width: 95%;
margin-top: 1.5%;
text-align: left;
}
acronym {
color: #F80;
font-weight: bold;
}
p {
color: #006;
font-size: 90%; }
/* ]]> */
</style>
</head>
<body>
<div style="text-align: left; padding-left: 1.5em;">
<p>In this example i will demonstrate on how you would passed those data into your <acronym title="PHP: Hypertext Preprocessor">PHP</acronym> enabled page using the help of <acronym title="Asynchronous Javascript and XML">AJAX</acronym>.</p>
<h3>Guidelines</h3>
<ol>
<li>All files on this demo must be saved on the same directory inside your document root.</li>
<li>Make sure that you have the permission to write files in your target folder.</li>
<li>This code has been tested on the following lists of browser:<br /><br />
<ul style="font-size: 80%; font-weight: bold; color: #778899;">
<li>Microsoft Internet Explorer 7+</li>
<li>Mozilla Firefox 1+</li>
<li>Opera 9+</li>
<li>Google Chrome 4</li>
<li>Apple Safari 4</li>
</ul>
</li>
</ol>
</div>
<form id="formContent" method="get" action="./test.php" onsubmit="return senData('data.php')">
<div id="content" style="margin-top: 1.200em; border: 2px solid #000; height: 30px; width: auto; background-color: #707070; line-height: 30px; color: #f1f1f1; padding-right: 2em; text-align: right;">
<label for="names">username: <input type="text" size="30" id="names" name="names" maxlength="30" value="essential" /></label>
<label for="password">password: <input type="password" size="30" id="password" name="password" maxlength="30" value="123456" /></label>
<input type="submit" value="save" id="smb" name="smb" />
</div>
<div id="loadInfo" style="margin-top: 1em; line-height: 1.6; padding-left: 1em;">
<?php
$NAME = 'data.txt';
if ( file_exists( $NAME ) ) { ?>
<h3>PHP Generated Content</h3>
<?php
$HANDLE = fopen( $NAME, 'r');
while (!feof( $HANDLE )) {
echo fgets( $HANDLE, 1000) . "<br />";
} fclose( $HANDLE );
}
?>
</div>
</form>
</body>
</html>data.php
<?php
$username = $_GET['names'];
$password = $_GET['password'];
$NAME = 'data.txt';
if (isset( $password ) || isset( $username )) {
$info = array( '<b>username:</b> '.$username, '<b>password:</b> '.$password );
$HANDLE = fopen( $NAME, 'wb' ) or die( "Can't open $NAME" );
foreach( $info As $data ) {
$writeData = fwrite( $HANDLE, "$data\r\n" );
} fclose( $HANDLE );
if ( file_exists( $NAME ) ) {
$HANDLE = fopen( $NAME, 'r');
while (!feof( $HANDLE )) {
echo fgets( $HANDLE, 1000);
}
} fclose( $HANDLE );
}
?>hope it does help...
essential
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