here is the code
<php?
$id1 =1;
$id2 = "module 1 loaded";
echo "$var1=$id1","$var2=$id2";
?>
i know this is not correct way how can i pass these two varables to flash
<?php
echo http_build_query( array(
'var1' => 1
,'var2' => 'module 1 loaded'
));
Paul Dixon's code snip is what you need on the PHP side. Here's the flash part:
myVars = new LoadVars();
myVars.load("http://localhost/foo.php");
myVars.onLoad = function (success) {
if (success) {
for( var attr in this ) {
trace (" key " + attr + " = " + this[attr]);
}
} else {
trace ("LoadVars Error");
}
}
Note, you will want to replace the loop logic with whatever your application requires.
If you want to create a script which outputs data which can be loaded with LoadVariables or LoadVars you need something like this
//set up your values
$vars=array();
$vars['foo']='bar';
$vars['xyz']='123';
//output
header ("Content-Type: application/x-www-urlformencoded");
$sep="";
foreach($vars as $name=>$val)
{
echo $sep.$name."=".urlencode($val);
$sep="&";
}
If your version of PHP supports it, http_build_query makes this even easier:
$vars=array();
$vars['foo']='bar';
$vars['xyz']='123';
header ("Content-Type: application/x-www-urlformencoded");
echo http_build_query($vars);
Shouldn't it just be in the form of a query string:
echo $var1.'='.$id1.'&'.$var2.'='.$id2;
Make sure the keys and values are urlencoded.
Flash Code:
btn.onPress = function(){
testLoadVars = new LoadVars();
testLoadVars.onLoad = function(success){
if(success){
trace(testLoadVars.var1);
trace(testLoadVars.var2);
}
else
trace("error");
}
testLoadVars.sendAndLoad("http://localhost/filename.php?uniqueID=" + getTimer(),testLoadVars,"POST");
}
That's all.. Any Problem faced??
PHP Code:
<php?
$id1 =1;
$id2 = "module 1 loaded";
print "&var1=$id1";
print "&var2=$id2";
?>
I am sure this will work...
Related
I am designing a php application using AJAX and PHP.
But the if statement in my php file behaves unexpectedly.
The request method is 'POST';
Ajax code is
function fetchData(){
var recipename = document.getElementById("recipe").value;
var calorie = false;
createRequestObject();
//window.alert(calorie);
var url = "reciepinfo.php";
xmlHttp.open("POST",url,true);
xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
window.alert(calorie);
xmlHttp.send("recipe="+recipename+"&calorie="+calorie);
xmlHttp.onreadystatechange = function(){
if(xmlHttp.readyState===4 && xmlHttp.status===200){
document.getElementById("target").innerHTML = xmlHttp.responseText;
}
}
}
And php code is:
<?php
$_SESSION['flag']=false;
if($_SESSION['flag']==false){
session_start();
$_SESSION['flag']=true;
}
$recipename = $_REQUEST['recipe'];
$calorie = $_REQUEST['calorie'];
echo $calorie;
$calorietemp = 0;
//echo $recipename;
$database = "nutrition";
$link = mysqli_connect('localhost','root','',$database);
$query = "select * from recipestb where name='$recipename'";
//$result = mysqli_query($link,$query);
//$obj = mysqli_fetch_object($result);;
if($link){
$result = mysqli_query($link,$query);
$obj = mysqli_fetch_object($result);
//$arr = mysqli_fetch_array($result);
//$names = "";
if(is_object($obj)){
echo "<i/>";
echo "<font size='5'>";
echo "Recipe name: ".$obj->name;
echo '<br/>';
echo "Carbohydrates : ".$obj->carbs." grams";
echo '<br/>';
echo "Proteins: ".$obj->protein." grams";
echo '<br/>';
echo "Fat: ".$obj->fat." grams";
echo '<br/>';
echo "Calories: ".$obj->calorie." cal";
$calorietemp = $obj->calorie;
echo '<br/>';
}else{
echo "non object";
}
}else{
echo "Connection failed";
}
if($calorie==true){
echo $calorie;
$_SESSION['caloriecount'] = $_SESSION['caloriecount'] + $calorietemp;
echo "Total calorie in diet :".$_SESSION['caloriecount'];
}
My session handling is weird i accept, but neglecting that, even the variable calorie is explicitly set to false, the if block executes.The echo $calorie statement also executes and it displays $calorie as false.
And i am not getting what is going wrong exactly.
Almost irritated with this.
Can anybody help?
EDIT1:
The php code is fine...
Ajax code has some problem...
When i set the $calorie to false in php code..
It behaved properly..
Leaving the session handling aside, the $calorie problem ...
You pass the data via AJAX as strings.
$calorie = 'false';
var_dump((true == $calorie));
You will get always bool(true). Using your AJAX example above, try this snippet instead (and use POST instead of REQUEST):
$calorie = ('true' == $_POST['calorie']);
var_dump($calorie);
// produces `bool(false)`
As a beginner i was unaware that the java-script variable with value false is passed as a string "false" to a server side script like PHP.
If we use a boolval(), in PHP this issue can be resolved.
PHP boolval()
I set the $calorie in my java-script to 0 or 1 as per my need.
When i wanted the false value to be sent to PHP script ,i set $calorie in java-script to 0 and the boolval() in corresponding PHP script evaluated it as false.
So the issue was resolved.
ok so I have this in my HTML code:
<script type="text/javascript" src="load2.php"> </script>
I saw somewhere you could call a php file like that and the javascript contained in it will be rendered on the page once echoed.
So in my PHP file i have this:
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
$storeArray[] = $row['DayNum']; }
$length = count($storeArray);
I connected to my database and stuff and pulled those records and stored them in an array. Now my problem is alerting them using js. This is what I have:
echo " function test() {
for(var i = 0; i<$length; i++){
alert($storeArray[i]);
}
}
";
The test() function is being onloaded in my HTML page, but for nothing the values in the array won't alert. Any help please?
echo " function test() {
for(var i = 0; i<$length; i++){
alert($storeArray[i]);
}
}
";
This code is literally writing what you have written above. It's not completely clear, but I believe your intent is to loop over the contents of your database data, and alert that to the browser with alert() function.
You can achieve this in a couple of ways.
Write multiple alert statements
echo "function test() {"; //Outputting Javascript code.
for($i = 0; $i<$length; $i++){ //Back in PHP mode - notice how we aren't inside of a string.
$value = $storeArray[$i];
echo "alert($value)"; //Outputting Javascript code again.
}
echo "}"; //Outputting Javascript code to close your javascript "test()" function.
Write a Javascript array, then loop over it in Javascript
echo "function test() {";
echo " var storeArray = ['" . implode("','", $storeArray) . "'];";
echo " for (var i = 0; i < storeArray.length; i++) {";
echo " alert(storeArray[i]);";
echo " };";
echo "}";
Finally, you could use AJAX and JSON to load the data, rather than outputting a JS file from PHP. That is an entirely different topic, though, and you should search StackOverflow for more examples as there are numerous questions and answers involving it.
Unless your array contains only number, you probably have JS error. You should put your $storeArray[i] in quotes in the alert function so it considered as a string in js.
alert('$storeArray[i]');
Once printed out, the JS will look something like this
alert('foo');
alert('bar');
Whereas with your code, it would've printed it like this
alert(foo);
alert(bar);
in your php file include load2.php
header("Content-Type: text/javascript");
in the in the top. so your browser get what it wants.
$i=0;
$storeArray = array();
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
$storeArray[$i] = $row['DayNum'];
$i++;
}
echo "var arr = Array();";
echo "function test() {";
foreach ($storeArray as $key=>$item) {
echo "arr[".$key."] = ".$item.";";
}
echo "}";
echo "alert(arr);";
actually you can comment out the two echos containing the <script></script> part when including the file as <script src="load2.php" type="text/javascript" ...
I'm trying to make some auto suggest stuff for an app. But i'm having some problems. I wrote this jquery code to detect when there is a change in the input:
function soletsgo(){
$('#theinput').keyup(function(){
value = $('#theinput').val();
if ( value.length > 2 ){
word = $('#theinput').val();
word.replace(/\s/g, " ");
$("#autodatathing").load("../pages/searchy.php?word="+word+"");
} else {
} }); }
And there is a PHP file (searchy.php) that processes some stuff:
<?php
$now = htmlentities($_GET['word']);
echo "<p>";
echo $now;
echo "</p>";
?>
But, when i put in a 'space' (known as 'whitespace') in the 'input', there is no result!
Could someone help?
You should do escape(word) in javascript code, then rawurldecode($_GET['word']) in php. Also if you have issues with utf8 encoding (i had in my past experience) you might consider using this function instead of rawurldecode.
You can just use:
function soletsgo(){
$('#theinput').keyup(function(){
value = $('#theinput').val();
if ( value.length > 2 ){
word = $('#theinput').val();
word.replace(" ", " ");
$("#autodatathing").load("../pages/searchy.php?word="+word+"");
} else {
}
});
}
You could also do it on the server side using:
<?php
$now = str_replace(" ", " ", htmlentities($_GET['word']));
echo "<p>";
echo $now;
echo "</p>";
?>
I am trying to get some information from our database and then use it in javascript/JQuery and I think I might be doing something wrong with the scope of the coding.
Here is the current segment of code on my phtml page (magento)
<script type="text/javascript">
<?php
echo 'var $image-paths = new Array();';
for ($i = 0; $i < count ($_child_products); $i++)
{
echo '$image-paths[';
echo $i;
echo '] = ';
echo $this->helper('catalog/image')->init($_child_products[$i], 'image');
echo ';';
}
?>
document.getElementById('main-image').href = $image-paths[1];
</script>
The bottom getElementById is just for testing to see if it really grabbed that image path. So far the php stuff is working and echo'ing the correct links. However, is simply echo'ing them not enough; does it actually register it into the javascript code?
Here is what my source code looks like on my server:
<script type="text/javascript">
var $image-paths = new Array();
$image-paths[0] = http://staging.greencupboards.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5f b8d27136e95/feeds/MrsMeyers/MRM-64565-a.jpg;
$image-paths[1] = http://staging.greencupboards.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/feeds/MrsMeyers/MRM-64566-a.jpg;
$image-paths[2] = http://staging.greencupboards.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/feeds/MrsMeyers/MRM-64568-a.jpg;
$image-paths[3] = http://staging.greencupboards.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/feeds/MrsMeyers/MRM-D43114-a.jpg;
document.getElementById('main-image').href = $image-paths[1];
</script>
But the image link does not change to image-path[1]. Any ideas?
Thanks in advance!
$image-paths[0] = http://staging.greencupboards.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5f b8d27136e95/feeds/MrsMeyers/MRM-64565-a.jpg;
^-- no quote here, or at the end of the string
You're producing invalid javascript. Pop up your javascript console (shift-ctrl-J in chrome/firefox) and you'll see the error.
Producing javascript dynamically is problematic. Anytime you insert something from a PHP variable/function, you should run that through json_encode(), which guarantees you get valid javascript:
echo json_encode($this->helper('catalog/image')->init($_child_products[$i], 'image'));
Or better yet, change the code to:
$links = array();
for ($i = 0; $i < count ($_child_products); $i++)
$links[] = $this->helper('catalog/image')->init($_child_products[$i], 'image');
}
echo '$image-paths = ', json_encode($links);
<script type="text/javascript">
<?php
echo 'var $image_paths = new Array();';
for ($i = 0; $i < count ($_child_products); $i++)
{
echo '$image_paths[';
echo $i;
echo '] = "'; // Here the starting of quotes.
echo $this->helper('catalog/image')->init($_child_products[$i], 'image');
echo '";'; // Here the ending of quotes.
}
?>
document.getElementById('main-image').href = $image_paths[1];
</script>
This should work now. Hope it helps.
I have a php loop that is echoing out geolocation values. How can I get it to write those values to a javascript array, so I can then use them to plot points on an HTML5 canvas?
The php loop is as follows
<ul id = "geo-list">
<?php foreach($data as $phrase) { ?>
<li><?php
if ($phrase->geo != false) {
echo " | From (";
echo $phrase->geo->coordinates[0];
echo ",";
echo $phrase->geo->coordinates[1];
echo ")";
} else {
echo " | No Location Data";
}
?>
</li>
<?php } ?>
</ul>
Did you try
var myJavascriptData = <?= json_encode($php_data) ?>;
You might want to take advantage of the JSON library for PHP.
The cleanest way to pass data to a browser's javascript program is to put it into a "hidden" html table.
The html should look something like
echo "\n<TABLE style='display: none;' id='DATTAB' >" ;
get_rows();
while ($cf = next_row()) {
echo "\n <TR>";
echo "\n<TD>" . $cf['KEY'] . "</TD>";
echo "\n<TD>" . $cf['COL1'] . "</TD>";
echo "\n<TD>" . $cf['COL2'] . "</TD>";
echo " </TR>";
}
echo "\n</TABLE>";
This table is then easily accessable from your javascript:-
var dtab = document.getElementById("DATATAB");
var rows = dtab.getElementsByTagName("tr");
for (var r = 0; r < rows.length ; r++) {
row = rows[r];
item_key = row.cells[0].innerHTML;
item_col1 = row.cells[1].innerHTML;
item_col2 = row.cells[2].innerHTML;
// do your thing here ......
}
Alternatively you could look at using the AJAX libraries like prototype or dojo
which have the all javascript components for accessing data from a "REST" type service.
You then need to write a separate service which gets the XML or JSON required for your page.
My suggestion is to dump a script block to the output and set them in a variable there.
The array definition will have to actually be in the javascript code that gets output to the page.
e.g., you'll need an output of something like:
<script type="text/javascript">
var coords = new Array(2);
coords[0] = new Array(2);
coords[0][0] = 123.45;
coords[0][1] = 987.65;
coords[1] = new Array(2);
coords[1][0] = 234.56;
coords[1][1] = 876.54;
</script>
There are more efficient ways to create this array statically, but this is just an example.
A more efficient way (in terms of code) would be to build up a string that defined the literal array, then dump out a javascript definition. The output would be something like:
<script type="text/javascript">
var coords = [[123.45,987.65],[234.56,876.54]];
</script>
so in your loop within php, you'd build up a string which would ultimately contain var coords = [[123.45,987.65],[234.56,876.54]]. Outside your loop, you wrap it in the script blocks and output it to the page.