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Call PHP function inside JavaScript inside echo

I have read the other similar questions, but not found the answer, so here it is:
<?php
function load($page) {
echo "page: ".$page;
}
echo "
<script type='text/javascript'>
var page = 0;
window.addEventListener(...., function(){
var x = .....
......
if(x = ....)
{
page = page + 1;
var runQuery = '<?php load(page); ?>'
}
})
</script>
";
?>
The problem is that <?php load(page); ?> is not executed. If I write load(page); outside the echo, it works. Can anyone help me ?

Change the function to return:
function load($page) {
return "page: ".$page;
}
You're executing PHP with the echo so just use the return of load():
echo "
<script type='text/javascript'>
var page = 0;
window.addEventListener(...., function(){
var x = .....
......
if(x = ....)
{
page = page + 1;
var runQuery = '" . load($page) . "'
}
})
</script>
";

Javascript variables to php

I am working with javascript and php, and I am trying to pass javascript variables from an html file to an php file. I already try a lot of ways using window.location.href and $_GET and $_POST. I dont know what I am doing wrong, or if his something missing, any suggestions to how pass javascript variables to php?
html file:
<script type="text/javascript" src="zepto.min.js"></script>
<script type="text/javascript">
function values() {
var wind = 300;
var rain = 0;
var speed = 35;
window.location.href = "getData.php?s1=" + wind + "&s2=" + rain + "&s3=" + speed;
}
</script>
php file:
<?php
$sensors=new Sensor();
if (isset($_GET['s1']) && isset($_GET['s2']) && isset($_GET['s3'])) {
$wind = $_GET['s1'];
$rain = $_GET['s2'];
$speed = $_GET['s3'];
$sensors->create();
}
?>

Your (JS) code isn't working because you never called the values() function.
<script type="text/javascript">
function values() {
var wind = 300;
var rain = 0;
var speed = 35;
window.location.href = "getData.php?s1=" + wind + "&s2=" + rain + "&s3=" + speed;
}
values(); // Add this to fire up the function
</script>
This assuming that the rest of your code checks out for the class you're using.
You will also have to echo out those values in your PHP:
echo $wind = $_GET['s1'];
echo $rain = $_GET['s2'];
echo $speed = $_GET['s3'];

How to add var javascript value into id name?

How to add var javascript value into id name ?
I have $i = 5; and var i = 2;
How to concatenate php var $i with javascript var i ?
I tried like this but not work.
$('#test<?PHP echo $i; ?>'+i).live('click', function() {
do something
});
and
$('#test<?PHP echo $i; ?>'+i+'').live('click', function() {
do something
});
How can i do that ?

var phpi = '<?PHP echo $i; ?>';
$('#test' + phpi + i).live('click', function() {
//do something
});
or if you want PHP $i + JS i for exmaple (3 + 2 = 5)
var phpi = <?PHP echo $i; ?>; // no quotes here as we need number
$('#test' + (phpi + i)).live('click', function() {
//do something
});
PHP echo makes some space so that might hamper the selector use it like this

php javascript echo javascript variable to php loop condition dynamically using onclick or how can I use ajax to solve it?

How can I store only the value of f() into $ab?
How can I also change $ab dynamically in the loop condition when the button is pressed so that the integers are printed out dynamically?
<script type="text/javascript">
var i = 0;
function f(){
i = i + 10;
document.getElementById("more").innerHTML= i;
}
</script>
php
$ab = "<p id='more'> </p>";
echo $ab;
for($x=0;$x<$ab;$x++) echo $x . "<br>";
echo "<button type='button' onclick='f()'> > </button>";

Try this,
Hope this work for you.
<script type="text/javascript">
var i = 10;
function f(){
i = i + 10;
var html = "";
for(var j=0;j<i;j++){
html += j+"<br/>";
}
document.getElementById("more").innerHTML= html;
}
</script>

You need to send the variable $x to your function f
echo "<button type='button' onclick='f($x)'> > </button>";
Then in the function you can count how many times the buttons all together are clicked, i++:
var i = 0;
function f(x) {
x += i * 10;
i++;
document.getElementById("more").innerHTML= i;
}

autoincrement id in javascript variable

didn't really succes with assigning values to new ids in my while(row) statement:
Here is an easy example, hope you understand what I want to do. Thanks
<?php...
$id=0;
while(rows = mysql_fetch_data){
$id = $id + 1;
$teamname = rows['team'];
?>
<script>
var team = '<?php echo $teamname; ?>';
var id = 'id_<?php echo $id; ?>';
//Here I want to save the teamnames as javascript variable "id_1", "id_2" etc, which I can use outside the while statement.
//For each row id = id_1, id_2, id_3, id_4.
//I want to make id_1 a variable which outputs teamname
//So that
//var id_1 = team; //team 1
//var id_2 = team; //team 2
<?php
}
?>
var id_1;
var id_2;
document.write("Teamname 1 = " + id_1 + "</br> Teamname 2 = " + id_2); //Here I want output of teamname 1 and 2.
</script>

I would recommend using an array rather than individual variables, as you have a list of team names:
<?php
$teamnames = [];
while(rows = mysql_fetch_data){
$teamnames[] = rows['team'];
}
?>
<script>
var teamnames = <?php echo json_encode($teamnames); ?>;
</script>
Then you end up with a client-side JavaScript array of team names. While you could then output them with document.write, there's probably a better option.
But here's your document.write updated to use the array:
var n;
for (n = 0; n < teamnames.length; ++n)
{
// Note: There's almost certainly a better choice than `document.write`
document.write("Teamname " + (n + 1) + " = " + teamnames[n] + "</br>");
}

Replace your code with the following and it should give you the output that you're after...
<script>
<?php
//...
$id_counter = 1; //Initialise counter
while($row = mysql_fetch_assoc()){
echo 'var id_'.$id_counter.' = "'.$rows['team'].'";'; //Echo row in the format: var id_X = "team_name";
$id_counter++; //Increment the counter
}
?>
document.write("Teamname 1 = " + id_1 + "</br> Teamname 2 = " + id_2); //Here I want output of teamname 1 and 2.
</script>