I have a php numeric array that includes 1000+ external links. Can you please help me figure out a PHP or JS function that will loop through every link and check if it's working or not? To create an array and include links that are no longer working.
For now I'm using this code:
$links = array(
'http://google.com',
'http://example.com',
'http://awkrlalrno1in01n2rn12r12r.com',
'http://112om1om1om.ru'
);
foreach($links as $link) {
if($file_headers = #get_headers($link)) {
if(strpos($file_headers[0],'404') !== false) {
$toDeleteLinks[] = $link;
}
}elseif($handle = curl_init($link)) {
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
//Get the HTML or whatever is linked in $url.
$response = curl_exec($handle);
//Check for 404 (file not found).
$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
if($httpCode == 0) {
$toDeleteLinks[] = $link;
}
curl_close($handle);
}
}
if(isset($toDeleteLinks)) {
echo '<pre>';
print_r($toDeleteLinks);
echo '</pre>';
}
but it gives a 500 Internal Server Error.. seems like server is unable to handle so much requests, since I've tried to create an array with 4 links, 2 - correct links, 2 incorrect ones and the function works as a charm.
I'm about to pull my hears out of my head, so please help :D Thanks in advance!
Related
Is it possible to get data php with Ajax without display them ? Simply stock data in JS variable?
I need this data to manipulate dates but no show it.
When I tried to simply return data without echo, etc. Data ajax in JS is empty
Ps : sorry my English is bad
try it this way
File *.php
<?php
$var_1 = null;
$var_2 = null;
/** ... */
$response = new stdClass;
$response->var_1 = $var_1;
$response->var_2 = $var_2;
echo json_encode($response);
?>
File *.html or *.js
<script>
var state = {};
$.ajax({
url: 'getData.php',
type: 'post',
dataType: 'json',
success: function (response) {
console.warn(response);
state = response;
}
});
</script>
Assuming you are trying to pass data from a PHP file to HTML/JS where it happens that your PHP file is also included in the HTML that's why it's displaying the echo (if I understood correctly!)
Using AJAX PHP example from w3school.
HTML sample file:
<?php include "PHP_SAMPLE_FILE.php" ?>
<header>
<meta name="temp_files" content="<?= htmlspecialchars($jsonData) ?>">
<!-- The rest of HTML content -->
JS sample file:
if (str.length == 0) {
// do something if there was nothing entered
} else {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
if (this.responseText.includes('{')){
result = JSON.parse(this.responseText);
// do something if response is JSON
} else {
// do something if response is null
}
}
}
xmlhttp.open("GET", "PHP_SAMPLE_FILE.php?q="+str, true);
xmlhttp.send();
}
PHP sample file:
$q = $_REQUEST["q"] ?? $_POST["q"] ?? "";
$sql = "GET SOMETHING FROM DATABASE";
$result = mysqli_query($con, $sql);
if (mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_assoc($result)) {
$json[] = $row;
}
}
$jsonData = json_encode($json ?? null);
if($q != ""){
echo $jsonData;
}
What happens exactly is that once the page loads initially it won't display the output of the PHP query as we have surrounded the echo with an if statement that requires to have query value (q) to search and it shouldn't be empty (""). Of course, assuming that once the page is loaded the data is shared with the client-side through defined PHP variables using various approaches, using a meta tag in the header for instance.
Once the data is received from the PHP file through echo, we use the JSON.parse function to parse it as in this scenario JS receives it as a string.
Hope that helped :)!
I know this question has been asked alot of times, but I think in my case, I'm dealing with something different, or better saying, I need something different.
I'm using an open source that works as appointments booking but unfortunately, the client can choose the service and not the duration of it. I can recreate the same service by manually adding it more times with different minutes length but that way, in the dropdown menu, would be present alot of options and that's not what I'm looking for as a workaround.
So, what I thought of, was using a dropdown to select the time, and based on that selection, on the services dropdown menu, would show the ONLY the corresponding ones based on time.
THe site looks like this:
site
What I'm looking for, is that whenever I select the nr of hours... I ONLY GET the services that are part of that hour and not all of them.
I'm ok with using a button that refreshes the page as far as that works, but I can't create another file that then redirects here.
This is the part of the code interested in that:
<select id="select-service" class="col-xs-12 col-sm-4 form-control">
<?php
// Group services by category, only if there is at least one service with a parent category.
$has_category = FALSE;
foreach($available_services as $service) {
if ($service['category_id'] != NULL) {
$has_category = TRUE;
break;
}
}
if ($has_category) {
$grouped_services = array();
foreach($available_services as $service) {
if ($service['category_name'] == '2 HOURS' || $service['category_name'] == '1 HOUR' || $service['category_name'] == '3 HOURS') {
if (!isset($grouped_services[$service['category_name']])) {
$grouped_services[$service['category_name']] = array();
}
$grouped_services[$service['category_name']][] = $service;
}
}
// We need the uncategorized services at the end of the list so
// we will use another iteration only for the uncategorized services.
$grouped_services['uncategorized'] = array();
foreach($available_services as $service) {
if ($service['category_id'] == NULL) {
$grouped_services['uncategorized'][] = $service;
}
}
foreach($grouped_services as $key => $group) {
$group_label = ($key != 'uncategorized')
? $group[0]['category_name'] : 'Uncategorized';
if (count($group) > 0) {
echo '<optgroup label="' . $group_label . '">';
foreach($group as $service) {
echo '<option value="' . $service['id'] . '">'
. $service['name'] . '</option>';
}
echo '</optgroup>';
}
}
} else {
foreach($available_services as $service) {
echo '<option value="' . $service['id'] . '">' . $service['name'] . '</option>';
}
}
?>
</select>
I only use a single AJAX function for my platform. Below is a minimal example:
function ajax(method,url,param_id_container_pos,id_container)
{
var xhr = new XMLHttpRequest();
xhr.open(method,url,true);
xhr.onreadystatechange = function()
{
if (xhr.readyState=='4')
{
var type = xhr.getResponseHeader('content-type').split('/')[1];
if (method=='post')
{
if (type=='json')
{
var j = JSON.parse(xhr.responseText);
console.log(j);//Check your browser's developer network panel.
eval(j.javascript);//eval is frowned upon though just use to call a sequel JS function.
}
}
}
}
}
//Example uses:
ajax('get','admin/?ajax=account','inside','id_target');
var fd = new FormData();
fd.append('ajax','admin_post_account_approval');
fd.append('parameter1',object1);
fd.append('parameter2',object2);
ajax('post',path+'admin/',fd);
Your goal is to make your code minimal and highly reusable when possible.
In regards to the server and PHP you need to remember: never trust the user. That means you need to verify everything:
<?php
if (isset($_POST['ajax']) && $_POST['ajax']=='admin_post_account_approval')
{
if (!isset($_POST['parameter1'])) {/*error_handling*/}
else if (!isset($_POST['parameter1'])) {/*error_handling*/}
else if (![condition not met]) {}
else
{
if ([all conditions met])
{
header('Content-Type: application/json');
$array = array('javascript'=>'alert(\'Just a JavaScript alert triggered by PHP.\');');
die(json_encode($array));
}
}
}
?>
Server side code, PHP should be thought of like real life: always fail first and test the conditions for length, proper characters or improper characters in form parameters, etc.
Additionally I highly recommend having the server respond with JSON as I generally illustrated in the code above. Because I only write my own code and don't work with other people's code this is more of a generic response than attempting to target whatever software you're working with. Regardless if you enable error reporting and pay attention to your developer tools in whichever browser you're using you'll get there. Good luck.
I am working on a webpage that shows the amount of online players on a game server that I am running, that is updated in real time.
The problem is that I can get the amount of players online in the game server to display, but it never updates and always shows the amount of players that were on the server when the page was loaded although people leave and join the server every second.
This is the PHP code that shows the numbers (it's simple, just for testing):
<?php
echo "<a id='a1' href='#' class='online'>Loading...</a>";
?>
What I am doing is to update 'a1' every second with the new amount of online players using javascript, which calls a php function called getplayers():
<script language="JavaScript">
setInterval(function(){
document.getElementById("a1").innerHTML = '<?php echo getplayers()?>';
}, 1000);
</script>
The function getplayers() it's exactly this:
<?php
include "Status.php";
function getplayers() {
$serverb = new Status("mc.spainpvp.com", '25565');
return $serverb->online_players;
}
?>
Lastly, Status.php is a script that gets the amount of players online and more things about the server, which I am sure that works:
<html>
<?php
class Status {
public $server;
public $online, $motd, $online_players, $max_players;
public $error = "OK";
function __construct($url, $port = '25565') {
$this->server = array(
"url" => $url,
"port" => $port
);
if ( $sock = #stream_socket_client('tcp://'.$url.':'.$port, $errno, $errstr, 1) ) {
$this->online = true;
fwrite($sock, "\xfe");
$h = fread($sock, 2048);
$h = str_replace("\x00", '', $h);
$h = substr($h, 2);
$data = explode("\xa7", $h);
unset($h);
fclose($sock);
if (sizeof($data) == 3) {
$this->motd = $data[0];
$this->online_players = (int) $data[1];
$this->max_players = (int) $data[2];
}
else {
$this->error = "Cannot retrieve server info.";
}
}
else {
$this->online = false;
$this->error = "Cannot connect to server.";
}
}
}
?>
</html>
So my question is if someone knows why it always updates with the first number of players instead of putting the new number of players?
You can not call PHP functions by Javascript. PHP is processed on a server in time of request. No piece of PHP code will be visible in response, because it's already processed.
So your javascript code will actually look like:
<script language="JavaScript">
setInterval(function(){
document.getElementById("a1").innerHTML = 'XXXXX';
}, 1000);
</script>
where XXXXX is amount of players in the time of request.
So your code will every second replace elements innerHTML with the static content.
If you want to get new amount of players every second, you need to use Ajax.
You can create request on your own using XMLHttpRequest or you may use some library like jQuery and it's $.ajax method.
You also need a PHP code on a server that will provide such information.
I am using the following to encode the html source of a ckeditor in a web application.
var updateString = app.getValue('wysiwygHomePage');
var encodedString = encodeURIComponent(updateString);
alert(encodedString);
app.httpRequest("www.xxxx.com/techy/savealldata.php", "GET", function(data, error, httpResponse){
alert(data);
},
{
"updateType":"homePage","updateString":encodedString}, "String", {}, {});
}
Then at the PHP end I am using :
<?php
$updateType = $_GET["updateType"];
$updateString = $_GET["updateString"];
$updateString2 = urldecode($updateString);
echo 'success here '.$updateType .' '.$updateString2 ;
?>
I am adding some coloured tex and the html source for this is:
<p>
<span style="color: rgb(255, 140, 0);">123</span><br />
</p>
<p>
This works okay until I cut and paste more than 32 times.
I then just get error returned from the PHP call.
I presume there are to many chars arriving at the PHP end ???
Any ideas why this is happening ?
Mr WARBY.
UPDATED PHP Code.
<?php
include 'dbdata.php';
$updateType = $_POST["updateType"];
$updateString = $_POST["updateString"];
$updateString2 = urldecode($updateString);
//echo 'success here '.$updateType .' '.$updateString2 ;
if($updateType === 'homePage')
{
$query5 = "UPDATE pageText SET HTML= "."'".$updateString2."'"." WHERE ID = 12";
//echo $query5;
echo 'Home Page Updated 2';
mysql_query($query5);
}
if($updateType === 'instructionPage')
{
$query5 = "UPDATE pageText SET HTML= "."'".$updateString2."'"." WHERE ID = 13";
echo 'Instruction Page Updated 2';
mysql_query($query5);
}
if($updateType === 'FAQPage')
{
$query5 = "UPDATE pageText SET HTML= "."'".$updateString2."'"." WHERE ID = 14";
echo 'FAQ Page Updated';
mysql_query($query5);
}
?>
There are a lot of variables in play here. You need to change your debugging strategy. Instead of testing end to end each time try isolating each component.
In Javascript, call "app.getValue('wysiwygHomePage')", encode the string, decode the string, and put it right back in the editor. Do that in a loop until you can determine if the client-side is mangling anything.
If not, try encoding a complicated string in Javascript, sending it to a PHP script that decodes/re-encodes and echos it back. Do that in a loop several times.
If you still haven't found the problem try making a PHP script that takes a complicated string, INSERTS it, SELECTs it, UPDATEs it in a loop to see if you database encoding or escaping is affecting it.
If at any point you find the string changing when it shouldn't you've probably found your problem.
I am using to Fullcalendar jquery with php for event management. I using ajax call for adding events. The call works fine for the first event entry after refresh. But for the following event entries duplicate events are created for each entry. Not sure what causing this.
This is the error:
This is the jquery call:
Jquery
$('#evesav').bind('click',function(){
$('#evesav').attr('disabled','disabled');
var title = $('#evename').val();
var edes = $('#evedes').val();
var everegion = $('#everegion').val();
var eveserv = $('#eveserv').val();
$.ajax({
url: 'add_events.php',
data: 'title='+ title+'&start='+ start +'&end='+ end +'&edes='+ edes +'&everegion='+ everegion +'&eveserv='+ eveserv,
type: "POST",
success: function(json) {
$('#myModal').modal('hide');
$('#alertcon').html(json);
$('#alert').modal('show');
$('#evename').val("");
$('#evedes').val("");
$('#evesav').removeAttr('disabled');
$('#calendar').fullCalendar( 'refetchEvents' );
}
});
$('#calendar').fullCalendar( 'rerenderEvents' );
});
This is the PHP Code:
PHP
<?php
if(($_POST['title'] && $_POST['start'] && $_POST['end'] && $_POST['edes'] && $_POST['everegion'] && $_POST['eveserv'])!= NULL)
{
// Values received via ajax
$title = $_POST['title'];
$start = $_POST['start'];
$end = $_POST['end'];
$edes = $_POST['edes'];
$region = $_POST['everegion'];
$server = $_POST['eveserv'];
//echo $title."".$start."".$end."".$edes."".$region."".$server;
// connection to the database
include('includes/db.php');
// insert the records
$sql = "INSERT INTO evenement (title, start, end, edes, region, server) VALUES (:title, :start, :end, :edes, :region, :server)";
$q = $bdd->prepare($sql);
$q->execute(array(':title'=>$title, ':start'=>$start, ':end'=>$end, ':edes'=>$edes, ':region'=>$region, ':server'=>$server));
if($q->execute(array(':title'=>$title, ':start'=>$start, ':end'=>$end, ':edes'=>$edes, ':region'=>$region, ':server'=>$server))){
var_dump($q->execute(array(':title'=>$title, ':start'=>$start, ':end'=>$end, ':edes'=>$edes, ':region'=>$region, ':server'=>$server)));
}
$eveid=$bdd->lastInsertId();
// Get array of all source files
$files = scandir("uploads/");
// Identify directories
$source = "uploads/";
$destination = "evedata/".$eveid."/";
mkdir("evedata/".$eveid);
// Cycle through all source files
foreach ($files as $file) {
if (in_array($file, array(".",".."))) continue;
// If we copied this successfully, mark it for deletion
if (copy($source.$file, $destination.$file)) {
$delete[] = $source.$file;
}
}
// Delete all successfully-copied files
foreach ($delete as $file) {
unlink($file);
}
echo "Added Successfully";
}
else {
echo "Please Fill the data";
}
?>
Some one please help me with this.
I'd give each event addition form a control, for instance a dynamic GUID, which then can be used to save to DB. This way you have a GUID to work with in dealing with CalDAV protocol, if you ever choose to do as such with your calendar, as well as have a way to make certain nothing is duplicated by chance in your database.
Now, do keep in mind this is simply a patch, not a fix. Therefore, you'll do yourself a lot of good to find a way to stop the multiple attempts to add an event to your DB. Regardless of your success in finding your bug, using a control mechanism or unique identifier is a good idea.