Here's what I got
$x=$ris;
while ($x<$rie){
array_push($array, pg_fetch_result($result,$x,0));
$x=$x+1;
}
So I'm just pushing lot's of values from a column to $array. I want to transmit the data in this array to a js array. So here's what's happening:
<script>
var temp = <?php echo json_encode($rie-$ris); ?>;
var temp2=0;
var jarray = [];
while (temp2<temp)
{
jarray.push(<?php echo json_encode($array[temp2]); ?>);
temp2++;
}
console.log(jarray)
</script>
Whenever I try to print anything out, jarray has nothing in it, which leads me to think that this
jarray.push(<?php echo json_encode($array[temp2]); ?>);
line is messed up. It's probably because I'm trying to reference a js variable in a php echo. The problem is I'm trying to make a while loop to just copy the array over, but in js, I'm incrementing a js var, so how can I possibly do this?
Try my code. First json_encode your php array and then JSON.parse in js after that while loop.
<script>
var temp = <?php echo json_encode($rie-$ris); ?>;
var temp2=0;
var jarray = [];
var arr = '<?php echo json_encode($array); ?>';
var arr_p = JSON.parse(arr);
while (temp2<temp)
{
jarray.push(arr_p[temp2]);
temp2++;
}
console.log(jarray)
</script>
Related
I have an object array var codropsEvents={[date1]:['event1'],[date2]:['event2'};
I want to insert multiple values to event1 i.e {[date1]:['event1','event2'],..}
I use the following code
<?php
$da=[];
$qry="select * from events";
$ex=mysqli_query($con,$qry);
while($row=mysqli_fetch_assoc($ex))
{
$timestamp = strtotime($row['date']);
$date= date('m-d-Y', $timestamp);
$event=$row['event'];
$da[]=$date;
$eve[]=$event;
}
?>
<script type="text/javascript">
var a=<?php echo(json_encode($da)); ?>;
var ev= <?php echo(json_encode($eve)); ?>;
var codropsEvents ={};
for(var i=0;i<a.length;i++)
{
codropsEvents[a[i]] = '<span>'+[ev[i]]+'</span>';
}
</script>
But using this code I got something like this,
var codropsEvents={[date1]:[event1],[date1]:[event2]}
But I need all events with same date in a single key is {[date1]:['event1','event2',..],[date2]:[''event3','event4'..],..};
Please anyone can help me
You need to check whether the key exists in the object, if not initialize it with empty array. Then push elements into the array.
<script type="text/javascript">
var a=<?php echo(json_encode($da)); ?>;
var ev= <?php echo(json_encode($eve)); ?>;
var codropsEvents ={};
for(var i=0;i<a.length;i++)
{
if (!codropsEvents[a[i]]) {
codropsEvents[a[i]] = [];
}
codropsEvents[a[i]].push('<span>'+[ev[i]]+'</span>');
}
</script>
I am fetching an array from a MySQL result into a array variable. I can successfully use a simple php echo line in the javascript beneath to grab the first $row element, but I want to use json_encode to get the whole array at once.
When I do this and try to set a javascript var to the first array element something goes wrong and even the single var method stops working.
<?php
.
.
.
while($row = $result->fetch_array(MYSQLI_NUM)) {
$row1 = $row[0];
}
?>
<script type="text/javascript">
var RowArray = <?php echo json_encode($row); ?>;
var RA1 = RowArray[0];
window.alert(RA1);
var Row1 = '<?php echo $row1; ?>';
window.alert(Row1);
</script>
Make an array containing all the records:
$rows = [];
while ($row = $result->fetch_array(MYSQLI_NUM))
{
// do custom modifications to $row if neededed
$rows[] = $row; // push to array
}
Or just:
$rows = $result->fetch_all(MYSQLI_NUM);
And then use json_encode() with $rows.
I am unable to show php variable in javascript;
this is my code here:
<script type="text/javascript">
$(document).ready(function (){
var n=<?php echo json_encode($count)?>;
for(var i=0;i<n;i++){
var div = document.createElement('div');
div.className = "d5";
div.id=i+1;
document.getElementById('wrapper').appendChild(div);
<?php
$query="select * from shop_product where shop_uniqueid='$unq'";
$result=mysql_query($query);
while($row=mysql_fetch_array($result))
{
$product=$row["in_product"];
?>
var product=<?php echo $product?>;
$('#'+div.id).html(product);
<?php
}
?>
}//for loop ends
});//ready ends
</script>
here i am trying to pass var product in html() of which value is coming from php like: var product=<?php echo $product?>;
but when doing so php value is not coming in Javascript's var product.
when I pass $('#'+div.id).html("abcd"); abcd value is showing in divs.
please help me.
Compare the first place you take data from PHP and put it in JavaScript:
var n=<?php echo json_encode($count)?>;
with your attempt to assign the product value:
var product=<?php echo $product?>;
You haven't converted the data from plain text to JavaScript in the second line. Use json_encode there too.
This is the weirdest thing i've seen. I have an array that I created with php - then I used JSON_Encode to use it with a FLOT Graph. I echoed out the encoded array once - and it's perfect.
Then randomly, another alert box appears with "null".
Subsequently, the script also has a "null" when i echo it into the javascript.
the var d1 is null when I inspect it...
At first I get an alert box with [[0,50],[1,3],[2,488],[3,25],[4,90],[5,50],[6,90],[7,50],[8,5]] -- then I get a second alert box WHICH I DID NOT CODE with "null".
code:
<?php
$num = 0;
while($row = $sql->fetch(PDO::FETCH_OBJ)){
$line[] = array($num,intval($row->percent));
$num ++;
}
$TEST = json_encode($line);
echo "<script>alert('".$TEST."');</script>";
?>
<script>
var d1 = <?php echo $TEST;?>;
$(document).ready(function () {
$.plot($("#chart"), [d1]);
});
</script>
Output from Inspector:
var d1 = []; //Notice the empty array
$(document).ready(function () {
$.plot($("#chart"), [d1]);
});
Use $line = array(); for empty data from while loop
$line = array();
while(....
You can check empty
if(count($line)!=0) {
$TEST = json_encode($line);
echo "<script>alert('".$TEST."');</script>";
}
UPDATE:
$TEST = json_encode($line);
echo "<script>$.plot($('#chart'), \"<?php echo $TEST; ?>\");</script>";
I have a php array and I want to add its value to a javascript array. For example I am doing it something like this.
$k_data = json_encode($k)
Thus
k_data = [2,3,4,8,9]
Now in javascript I am doing like the following
var s4 = [[]];
for(var i = 0; i<5; i++)
{
s4.push([i,$k_data[i]]);
}
plot5.series[0].data = s4;
where plot5 is jqplot graph. But this is not working, I am getting blank graph while the following thing is working
for(var i = 0; i<5; i++)
{
s4.push([i,Math.sin(i)]);
}
Where I am making mistake?
If you want to deal with the php array only, you can do this-
First, implode the array to make a comma-separated string, say $str. Just like-
<?php
$str = implode(",", $array);
?>
Then, use split to convert the php string to the javascript array. Just like-
<script>
var str = <?php echo $str; ?>;
var array = str.split(',');
</script>
OR, json_encode() can help you directly-
<script>
<?php
$js_array = json_encode($php_array);
echo "var js_array = ". $js_array . ";\n";
?>
</script>
Well you can do a for loop and echo the Javascript commands to fill the Javascript Array
<script>
var s4 = [[]];
<?php
$k_data = json_encode($k)
$i = 0;
foreach($k_data as $v) {
echo 's4.push([' , $i , ',Math.sin(' , $v , ')]);';
++$i;
}
?>
plot5.series[0].data = s4;
</script>
It seems that you are refering to a php variable in you javascript. Keep in mind that PHP is executed serverside, whereas javascript is executed by the browser. Therefore, you need to pass the PHP variable to your javascript. Assuming that your javascript and PHP are in one .php file, replacing above javascript with the following should work:
<?php $k_data_js = implode("','", $k_data); ?>
var k_data = <?php echo "['" . $k_data_js . "']"; ?>;
var s4 = [[]];
for(var i = 0; i<k_data.length; i++)
{
s4.push([i,k_data[i]]);
}
plot5.series[0].data = s4;
The variable is passed to javascript in the second line. From then on you can refer to k_data in your script.