I want to create a text file stole to localhost directory.
below is my code.
below app.php
document.getElementById("save_button").addEventListener("click", function() {
var content = document.getElementById("final_span").value();
var file_name =document.getElementById("filename").value();
<?php
$fn = strstr($file_name,'.', true);
$dir = "../project/Record";
$file = fopen($dir."/".$fn.".txt","w+");
fwrite($file, $content);
fclose($file);
?>
});
</script>```
Your js will execute in browser and php is server side language. You can't control php within js as you've done. You can do it by ajax call from you js to php file and create a file.
<script> document.getElementById("save_button").addEventListener("click", function() {
var content = document.getElementById("final_span").value;
var file_name =document.getElementById("filename").value;
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("txtHint").innerHTML = this.responseText;
}
};
xmlhttp.open("GET", "app.php?file_name=" + file_name, true);
xmlhttp.send();
</script>
app.php
<?php $file_name= $_GET['file_name'];
$fn = strstr($file_name,'.', true);
$dir = "../project/Record";
$file = fopen($dir."/".$fn.".txt","w+");
fwrite($file, $content);
fclose($file);
?>
Related
since I wrote this code and it turned out that it is not entering the if statement ,My target was to bring the array from php(db) and put it in array in js,what to do?Here is the code ,is the problem that it is located in an extension js file ?Moreover php file getusercatpref.php is returning ["violen","ios","programming","nodjs"].
var arr = new Array();
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var myArr = JSON.parse(this.responseText);
arr = myArr;
}
};
xmlhttp.open("GET", "getusercatpref.php", true);
xmlhttp.send();
PHP Code
<?php
$name="root";
$pas="";
$dbname="jobpursuit";
$con=mysqli_connect("localhost", $name, $pas,$dbname);
$arrayCategories = array();
$sql="Select * FROM preferences where username='12' ";
$result=mysqli_query($con,$sql);
$index=0;
while($row = mysqli_fetch_assoc($result)){
$arrayCategories[$index] = $row['categoryname'];
$index=$index+1;
}
echo json_encode($arrayCategories);
?>
I am trying to use a .php file to edit a .txt file on my http web server. I can call the .php file and get it to run (and echo something random back) just fine, but when I use file_put_contents it doesn't work. I have tried setting file permissions to 777, 0775, etc but nothing happens. (although from what I have gathered, it seems that permissions are for local systems only). I know that there are some similar questions already here, but I cannot understand the answers to any of them.
testingPHP.js (trimmed):
function submitData() {
var data = prompt('Enter data');
sendToServer(data, 'test.txt');
}
function sendToServer(data, file) {//file is file to write into, not the php file
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
}
}
xmlhttp.open("GET", "editTXT.php?txtFile=file&data=data");
xmlhttp.send();
setTimeout(update, 500);
}
function update() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var response = xhttp.responseText;
console.log(response);
}
};
xhttp.open("GET", "readTxt.php?file=test.txt", true);
xhttp.send();
}
setInterval(update, 1000);
editTxt.php:
<?php
$txtFile = $_GET["txtFile"];
$data = $_GET["data"];
file_put_contents($txtFile, $data);
?>
readTxt.php:
<?php
$file = $_GET['file'];
$data = file_get_contents($file);
echo $data;
?>
I hope the following might help - I think the main problem is in the javascript funnily enough but I'll post here the changes I made to all files anyway. Incidentally - constant polling like this using Ajax could instead be done in a cleaner way using an EventSource connection and Server Sent Events.
If the textfile is to be overwritten completely when the script is invoked then this works fine ( in test anyway ) but if the data is intended to add to existing content you'd need to add FILE_APPEND as the final argument to file_put_contents
editTxt.php
<?php
if( $_SERVER['REQUEST_METHOD']=='GET' && isset( $_GET['txtFile'], $_GET['data'] ) ){
$file=__DIR__ . '/' . $_GET['txtFile'];
$data=$_GET['data'];
$bytes=file_put_contents( $file, $data );
if( !$bytes )exit('error');
}
?>
readTxt.php
<?php
if( $_SERVER['REQUEST_METHOD']=='GET' && isset( $_GET['file'] ) ){
$file=__DIR__ . '/' . $_GET['file'];
exit( file_get_contents( $file ) );
}
?>
And the HTML & Javascript
<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='utf-8' />
<title></title>
</head>
<body>
<script>
function submitData() {
var data = prompt('Enter data');
if( data ){/* only submit if there is data */
sendToServer(data, 'test.txt');
setInterval(update, 1000);
return true;
}
}
function sendToServer(data, file) {//file is file to write into, not the php file
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
}
}
/* the filename and the data need to be escaped in the string */
xmlhttp.open("GET", "editTXT.php?txtFile="+file+"&data="+data);
xmlhttp.send();
setTimeout(update, 500);
}
function update() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var response = xhttp.responseText;
console.log(response);
}
};
xhttp.open("GET", "readTxt.php?file=test.txt", true);
xhttp.send();
}
/* call the function that prompts for data input */
submitData();
</script>
</body>
</html>
So I have a code, where a number is retrieved from a text file and is displayed through HTML.
The thing is that it only retrieves the number when I refresh the page. If I change the number on other page, it doesn't change on the other page.
I've seen similar questions before, most of them said to use AJAX, but I don't understand much about AJAX and I only need it for this bit of code, it's not like I'm going to constantly use it. I would like to know if there is any other besides AJAX and if there is only AJAX, please present examples of code.
PHP code:
<?php
$file = "num.txt"; //Path to your *.txt file
$contents = file($file);
$num = implode($contents);
?>
JavaScript code. Basically it gets the PHP value and outputs to the html.
document.getElementById("num").innerHTML = '<?php echo $num; ?>';
Keep in mind, I don't want to refresh the page. Just the variable.
EDIT: PHP code - Getting an error - Notice: Undefined index: keynum in C:\xampp\htdocs\num.php on line 3
Here is the code of the PHP
<?php
$keynum = $_POST['keynum'];
$post = "INSERT INTO post (keynum) VALUES ($keynum)";
$fileLocation = getenv("DOCUMENT_ROOT") . "/num.txt";
$file = fopen($fileLocation,"w");
$content = $keynum;
fwrite($file,$content);
fclose($file);
echo 'Response';
die();
?>
You can achieve what you want using XMLHttpRequest, like this:
function updateData() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById('num').innerHTML = this.responseText;
}
};
xhttp.open('GET', '/num.php', true);
xhttp.send();
}
setInterval(updateData, 2000);
If you want to refresh the variable without refreshing the page, then you need to use an asynchronous request. It doesn't need to be AJAX, you can use the native XMLHttpRequest() function.
If you want more info: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Synchronous_and_Asynchronous_Requests
or with jquery:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
setInterval(function(){
$.ajax({url:"num.php", success:function(result){
$("#num").html(result);
}});
}, 3000);
</script>
<textarea id="num"></textarea>
get_nbr.php
<?php
$file = "num.txt"; //Path to your *.txt file
$contents = file($file);
$num = implode($contents);
echo $num;
?>
index.php
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!---trigger get_nbr() on page load on an infinite loop every two seconds -->
<body onload="setInterval(get_nbr, 2000)">
<script>
function get_nbr() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("num").innerHTML = this.responseText;
}
};
xhttp.open("GET", "get_nbr.php", true);
xhttp.send();
}
</script>
<p id="num"></p>
like this.
let url = ""; //whatever url your requesting.
setInterval(function(){
var x = new XMLHttpRequest();
x.open("GET" , url , true);
x.onreadystatechange = function(){
if(x.readyState == 4 && x.status == 200)
{
document.getElementById("num").innerHTML = x.responseText;
}
}
x.send();
} , 2000);
-- UPDATE , added post --
setInterval(function(){
var x = new XMLHttpRequest();
x.open("POST" , url , true);
x.setRequestHeader("Content-Type" , "application/x-www-form-urlencoded");
x.onreadystatechange = function(){
if(x.readyState == 4 && x.status == 200)
{
document.getElementById("num").innerHTML = x.responseText;
}
}
x.send("postVar1=123");
} , 2000);
I am trying to pass data back to the server and then use the reply to update the browser page.
My code for a SELECT input is as follows;
<select id ="MatchCaptain" name="MatchCaptain" onchange="findTeleNo(this.value)"
<?php
$MC = $_SESSION["MatchCapt"];
player_load($MC);
?>
>
</select>
The script code is as follows;
<script>
function findTeleNo(that){
alert("I am an alert box!" + that);
var xhttp;
if (window.XMLHttpRequest) {
// code for modern browsers
xhttp = new XMLHttpRequest();
} else {
// code for old IE browsers
xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("TeleNo").value = this.responseText;
}
}
};
xhttp.open("GET", "findTeleNo.php?q=" + that, true);
xhttp.send();
</script>
The purpose of the script is to take the value selected in the dropdown (variable "that") and submit it to the php file as variable q.
And the PHP file is as follows;
<?php
$MatchCaptain = $_REQUEST["q"];
$teleNo = "";
$db_handle = mysqli_connect(DB_SERVER, DB_USER, DB_PASS );
$database = "matchmanagementDB";
$db_found = mysqli_select_db($db_handle, $database);
if ($db_found) {
$SQL = "SELECT * FROM `playerstb` ORDER BY `Surname` ASC, `FirstName` ASC";
$result = mysqli_query($db_handle, $SQL);
$ufullName = split_name($MatchCaptain);
while ( $db_field = mysqli_fetch_assoc($result) ) {
$uName = $db_field['FirstName'];
$uName = trim($uName);
$Surname = $db_field['Surname'];
$Surname = trim($Surname);
$fullName = $uName." ".$Surname;
if ($fullName == $ufullName )
{
$teleNo = $db_field['TeleNo'];
break;
}
}
}
echo $teleNo;
function split_name($name) {
$name = trim($name);
$last_name = (strpos($name, ' ') === false) ? '' : preg_replace('#.*\s([\w-]*)$#', '$1', $name);
$first_name = trim( preg_replace('#'.$last_name.'#', '', $name ) );
$ufullName = $first_name." ".$last_name;
return $ufullName;
}
?>
The php file requests the q variable from the url and makes it $MatchCaptain.
This will be a name like Joe Bloggs. The next piece of code connects to a MySQL table to extract players first names surnames and telephone numbers. The first names and surnames are concatenated to form the fullname which is compared with the $MatchCaptainWhen a match is made the variable $teleNo is set to the Telephone Number of that player. The echo statement rerurns the value to the script.
The field id I am trying to update is;
<p><b>Telephone Number: </b> <span id="TeleNo"> <?php echo $_SESSION["TeleNo"]; ?></span></p>
The alert in the script function findTeleNo shows me that I have entered the function but nothing happens after that.
Any help as to how I get this working would be grateful.
I have changed my script to
<script>
function findTeleNo(that){
var xhttp;
if (window.XMLHttpRequest) {
// code for modern browsers
xhttp = new XMLHttpRequest();
} else {
// code for old IE browsers
xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xhttp.open("GET", "findTeleNo.php?q=" + encodeURIComponent(that), true);
xhttp.send();
xhttp.onreadystatechange = function() {
if (xhttp.readyState === 4) {
if (xhttp.status === 200) {
// OK
alert('response:'+xhttp.responseText);
document.getElementById("TeleNo").innerHTML = this.responseText;
// here you can use the result (cli.responseText)
} else {
// not OK
alert('failure!');
}
}
};
};
</script>
The response shown by alert('response:'+xhttp.responseText); is correct and the line of code
document.getElementById("TeleNo").innerHTML = this.responseText;
does print the response to the web page.
I want to update data on my webpage using Ajax. This data is read using PHP script
and I want this function to carry out EVERY 5 seconds. For some reason, this is not happening at all.
My JavaScript:
<script>
function refresh(){
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementClassName("scroll").innerHTML = this.responseText;
}
};
xmlhttp.open("GET", "gm.php?q=" + "<?php echo $mf[0]."-".$mf[1].".txt" ?>", true);
// The PHP variables refer to a specific file
xmlhttp.send();
}
setInterval(refresh,5000);
</script>
My gm.php file:
<?php
$q = $_REQUEST["q"];
$mr=fopen($q, "a+");
$line = fgets($mr);
while (!feof($mr)) {
$line = $line.fgets($mr);
} # while ends
fclose($mr);
echo $line. "<br />";
?>
I figured out that my element selector was wrong as I was using get ElementClassName instead of getElementsByClassName. Also, I hadn't given the element index in the class, due to which the element could not be selected.
Another reason was my usage of quotes within the JavaScript string which included the PHP script.
My JavaScript:
<script>
function refresh(){
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementsByClassName("scroll")[1].innerHTML = this.responseText;
}
};
xmlhttp.open("GET", "gm.php?q=" + '<?php echo $mf[0]."-".$mf[1].".txt" ?>', true);
// The PHP variables refer to a specific file
xmlhttp.send();
}
setInterval(refresh,5000);
</script>
My gm.php file:
<?php
$q = $_REQUEST["q"];
$mr=fopen($q, "a+");
$line = fgets($mr);
while (!feof($mr)) {
$line = $line.fgets($mr);
} # while ends
fclose($mr);
echo $line. "<br />";
?>